João Cunha de Sequeira Amaral

Investigador Auxiliar

Perfil biográfico

João Amaral obtained his PhD in Physics at the University of Aveiro in December 2009, and has dedicated most of his scientific career to the study of magnetism and magnetic materials. His main focus of research during MSc. and PhD. was on magnetocaloric materials for magnetic refrigeration applications. Recent research interests include rare-earth free permanent magnets, by optimizing their composition and production through nanostructuring techniques, in a combined effort with the use of theoretical tools such as Density Functional Theory and Ising/Heisenberg models. He is currently an Assistant Researcher (Investigador FCT 2015 programme) at CICECO - Aveiro Institute of Materials and Physics Dept. at the University of Aveiro.

He was the main supervisor of two PhD. students (finished 2020 and 2021), and is currently the main supervisor of two others, and the co-supervisor of another. João has coordinated one FCT exploratory project, and is now the PI of one FCT exploratory project, an advanced computational research project, an FCT-DAAD bi-lateral project with partner TU Darmstadt Germany, and is one of the seven research line coordinators of the 19M€ Bosch Thermotechnology - University of Aveiro Smart Green Homes Project.

He has presented over 25 oral presentations (4 invited) in international conferences. João was an invited researcher at the EXSS group at Imperial College London, from 2013-2015. João has published over 85 peer-reviewed papers, with over 1200 citations (~1100 no self-citations), with an h-factor of 16. João was the invited Editor of Special Issues in AIP Advances (American Institue of Physics), Frontiers in Energy Research (Frontiers) and Journal of Magnetism and Magnetic Materials (Elsevier).

 

Projectos financiados

Principal Investigator of the FCT Exploratory Research Project "Exploring nano-fabrication methods of high coercivity rare-earth free Si-Alnico permanent magnets" (EXPL/CTM-NAN/1614/2013) [more info at the FCT web page]

Task leader of the FCT SR&TD Project of consolidation of research skills and resources "Facing the challenges of characterizing novel thermal materials and processes (Heat@UA)" (RECI/CTM-CER/0336/2012).

Publicações seleccionadas

"Magnetovolume Effects in Heusler Compounds via First-Principles Calculations", J. N. Gonçalves, J. S. Amaral and V. S. Amaral, IEEE Trans. Magn. 50 1301104 (2014) [DOI].

"Thermodynamics of the 2D Ising model from a random path sampling method", J. S. Amaral, J. N. Gonçalves and V. S. Amaral, IEEE Trans. Magn. 50 1002204 (2014) [DOI].

"Disorder effects in giant magnetocaloric materials", J. S. Amaral and V. S. Amaral; Phys. Stat. Sol. A 211 971 (2014) [DOI].

"Strain induced enhanced ferromagnetic behavior in inhomogeneous low doped La0.95Sr0.05MnO3+delta", S. Das, J. S. Amaral, et al.; Appl. Phys. Lett. 102 112408 (2013) [DOI].

"On the Curie temperature dependency of the Magnetocaloric effect", J. H. Belo, J. S. Amaral, et al.; Appl. Phys. Lett. 100 242407 (2012) [DOI].

"Handling mixed-state magnetization data for magnetocaloric studies - a solution to achieve realistic entropy behaviour", S. Das, J. S. Amaral, V. S. Amaral; J. Phys. D Appl. Phys. 43 152002 (2010) [DOI].

"On estimating the magnetocaloric effect from magnetization measurements", J. S. Amaral, V. S. Amaral; J. Magn. Magn. Mat. 322 1552 (2009) [DOI].

"The effect of magnetic irreversibility on estimating the magnetocaloric effect from magnetization measurements", J. S. Amaral, V. S. Amaral; Appl. Phys. Lett. 94 042506 (2009) [DOI].

"The effect of chemical distribution on the magnetocaloric effect: A case study in second-order phase transition manganites", J. S. Amaral, P. B. Tavares, et al., Journal of Non-Crystalline Solids 354 (47-51), 5301-5303 (2008) [DOI].

"A mean-field scaling method for first- and second-order phase transition ferromagnets and its application in magnetocaloric studies", J. S. Amaral, N. J. O. Silva, V. S. Amaral; Appl. Phys. Lett. 91, 172503 (2007) [DOI].

"Magnetocaloric effect in Er and Eu-substituted ferromagnetic La-Sr Manganites", J. S. Amaral, M. S. Reis, et al.; J. Magn. Magn. Mat. 290 686 (2005) [DOI].

Projectos

Publicações

Magnetic Driven Nanocarriers for pH-Responsive Doxorubicin Release in Cancer Therapy

Nogueira, J; Soares, SF; Amorim, CO; Amaral, JS; Silva, C; Martel, F; Trindade, T; Daniel-da-Silva, AL
2020, MOLECULES, 25, 2.
ISBN: 1420-3049

Broad Multi-Parameter Dimensioning of Magnetocaloric Systems Using Statistical Learning Classifiers

Silva, DJ; Amaral, JS; Amaral, VS
2020, FRONTIERS IN ENERGY RESEARCH, 8.

Development of polyurethane foam incorporating phase change material for thermal energy storage

Amaral, C; Pinto, SC; Silva, T; Mohseni, F; Amaral, JS; Amaral, VS; Marques, PAAP; Barros-Timmons, A; Vicente, R
2020, JOURNAL OF ENERGY STORAGE, 28.

In-Silico Thermodynamic Description of Heusler Compounds Applied to Magnetocalorics by Monte Carlo Simulations Starting from Ab-Initio

Amorim, CO; Goncalves, JN; Amaral, VS; Amaral, JS
2020, EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2020, 14, 1271-1277.
ISBN: 1099-0682

Synthesis of red mud derived M-type barium hexaferrites with tuneable coercivity

Carvalheiras, J; Novais, RM; Mohseni, F; Amaral, JS; Seabra, MP; Labrincha, JA; Pullar, RC
2020, CERAMICS INTERNATIONAL, 46, 5, 5757-5764.
ISBN: 1873-3956

Bonded ferrite-based exchange-coupled nanocomposite magnet produced by Warm compaction

Mohseni, F; Pullar, RC; Vieira, JM; Amaral, JS
2020, JOURNAL OF PHYSICS D-APPLIED PHYSICS, 53, 49.
ISBN: 1361-6463

Changing the magnetic states of an Fe/BaTiO(3)interface through crystal field effects controlled by strain

Amorim, CO; Goncalves, JN; Amaral, JS; Amaral, VS
2020, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 22, 32, 18050-18059.
ISBN: 1463-9084

Development of structural layers PVC incorporating phase change materials for thermal energy storage

Amaral, C; Gama, NV; Mohseni, F; Amaral, JS; Amaral, VS; Marques, PAAP; Barros-Timmons, A; Vicente, R
2020, APPLIED THERMAL ENGINEERING, 179.

Effect of surfactants on the optical and magnetic properties of cobalt-zinc ferrite Co0.5Zn0.5Fe2O4

El Foulani, AH; Aamouche, A; Mohseni, F; Amaral, JS; Tobaldi, DM; Pullar, RC
2019, JOURNAL OF ALLOYS AND COMPOUNDS, 774, 1250-1259.
ISBN: 1873-4669

Cooling by sweeping: A new operation method to achieve ferroic refrigeration without fluids or thermally switchable components

Silva, DJ; Amaral, JS; Amaral, VS
2019, INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 101, 98-105.
ISBN: 1879-2081

Link of Weak Ferromagnetism to Emergence of Topological Vortices in Bulk Ceramics of h-LuMnxO3 Manganite

Baghizadeh, A; Vaghefi, PM; Alikin, DO; Amaral, JS; Amaral, VS; Vieira, JM
2019, JOURNAL OF PHYSICAL CHEMISTRY C, 123, 10, 6158-6166.

On the Optimization of Magneto-Volume Coupling for Practical Applied Field Magnetic Refrigeration

Davarpanah, A; Belo, JH; Amaral, VS; Amaral, JS
2019, PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 256, 3.
ISBN: 1521-3951

Enhancing the temperature span of thermal switch-based solid state magnetic refrigerators with field sweeping

Silva, DJ; Ventura, J; Amaral, JS; Amaral, VS
2019, INTERNATIONAL JOURNAL OF ENERGY RESEARCH, 43, 2, 742-748.
ISBN: 1099-114X

Magnetic nanosorbents with siliceous hybrid shells of alginic acid and carrageenan for removal of ciprofloxacin

Soares, SF; Rocha, MJ; Ferro, M; Amorim, CO; Amaral, JS; Trindade, T; Daniel-da-Silva, AL
2019, INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES, 139, 827-841.
ISBN: 1879-0003

Enhancement of maximum energy product in exchange-coupled BaFe12O19/Fe3O4 core-shell-like nanocomposites

Mohseni, F; Pullar, RC; Vieira, JM; Amaral, JS
2019, JOURNAL OF ALLOYS AND COMPOUNDS, 806, 120-126.
ISBN: 1873-4669

Octylamine as a novel fuel for the preparation of magnetic iron oxide particles by an aqueous auto-ignition method

Ben-Arfa, BAE; Mohseni, F; Salvado, IMM; Ferreira, JMF; Amaral, JS; Pullar, RC
2019, JOURNAL OF ALLOYS AND COMPOUNDS, 805, 545-550.
ISBN: 1873-4669

Temperature dependent thermal conductivity of magnetocaloric materials: Impact assessment on the performance of active magnetic regenerative refrigerators

Silva, DJ; Davarpanah, A; Amaral, JS; Amaral, VS
2019, INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 106, 181-187.
ISBN: 1879-2081

Modeling and computing magnetocaloric systems using the Python framework heatrapy

Silva, DJ; Amaral, JS; Amaral, VS
2019, INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 106, 278-282.
ISBN: 1879-2081

Experimental and theoretical evidences that atomic disorder suppresses half-metallicity of Heusler compounds

Caraballo-Vivas, RJ; Tedesco, JCG; Checca, NR; Fortunato, NM; Goncalves, JN; Sanchez, DR; Carvalho, AMG; Amaral, JS; Reis, MS
2019, INTERMETALLICS, 111.
ISBN: 1879-0216

Electric Field Induced Room Temperature Null to High Spin State Switching: A Computational Prediction

Amorim, CO; Amaral, JS; Goncalves, JN; Amaral, VS
2019, ADVANCED THEORY AND SIMULATIONS, 2, 4.
ISBN: 2513-0390

Enhancement of the dielectric permittivity and magnetic properties of Dy substituted strontium titanate ceramics

Tkach, A; Amaral, JS; Zlotnik, S; Amaral, VS; Vilarinho, PM
2018, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 38, 2, 605-611.

Experimental realisation of off-stoichiometric Fe-Mn-Si full Heusler alloy with hexagonal crystal structure by pulsed laser deposition

Checca, NR; Caraballo-Vivas, RJ; Coelho, AA; Rossi, A; Fortunato, NM; Mohseni, F; Goncalves, JN; Amaral, JS; Rocco, DL; Reis, MS
2018, MATERIALS & DESIGN, 143, 268-273.

Synthesis and Characterization of Rare-Earth Orthoferrite LnFeO(3) Nanoparticles for Bioimaging

Pinho, SLC; Amaral, JS; Wattiaux, A; Duttine, M; Delville, MH; Geraldes, CFGC
2018, EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 31, 3570-3578.

Volume dependence of magnetic properties in Co2Cr1-xYxGa (Y= Ti-Ni) Heusler alloys: A first-principles study

Goncalves, JN; Fortunato, NM; Amaral, JS; Amaral, VS
2017, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 428, 362-367.

Interaction of multiferroic properties and interfaces in hexagonal LuMnO3 ceramics

Baghizadeh, A; Vieira, JM; Stroppa, DG; Vaghefi, PM; Graca, MP; Amaral, JS; Willinger, MG; Amaral, VS
2017, JOURNAL OF PHYSICS D-APPLIED PHYSICS, 50, 5.

Interdiffusion Processes in High-Coercivity RF-Sputtered Alnico Thin Films on Si Substrates

Mohseni, F; Baghizadeh, A; Lourenco, AACS; Pereira, MJ; Amaral, VS; Vieira, JM; Amaral, JS
2017, JOM, 69, 8, 1427-1431.

Dielectric spectroscopy and magnetometry investigation of Gd-doped strontium titanate ceramics

Tkach, A; Amaral, JS; Vitor, SAB; Vilarinho, PM
2017, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 37, 6, 2391-2397.
ISBN: 1873-619X

Insights on the origin of the Tb5Ge4 magnetocaloric effect

Belo, JH; Barbosa, MB; Pires, AL; Costa, RM; Teixeira, JGV; Silva, J; Algarabel, PA; Magen, C; Morellon, L; Amaral, JS; Zeitler, U; Veerendra, G; dos Santos, M; Ren, Y; Ibarra, MR; Araujo, JP; Pereira, AM
2017, PHYSICA B-CONDENSED MATTER, 513, 72-76.
ISBN: 1873-2135

On the nature of the (de)coupling of the magnetostructural transition in Er5Si4

Costa, RM; Belo, JH; Barbosa, MB; Algarabel, PA; Magen, C; Morellon, L; Ibarra, MR; Goncalves, JN; Fortunato, NM; Amaral, JS; Araujo, JP; Pereira, AM
2017, PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 254, 10.

Assessing Segregation Effects on Multiferroic Properties of Antiferromagnetic - Weak Ferromagnetic Coupled Sy stems by Analytical HRTEM

M. Vieira, A. Baghizadeh, J. S. Amaral, J. N. Gonalves, B. A. Almeida, M-G. Willinger, V. S. Amaral
2016, Microscopy and Microanalysis, 22, S4, 58-59.

Hidden value in low-cost inorganic pigments as potentially valuable magnetic materials

Novais, RM; Seabra, MP; Amaral, JS; Pullar, RC
2016, CERAMICS INTERNATIONAL, 42, 8, 9605-9612.

Smallest Bimetallic CoPt3 Superparamagnetic Nanoparticles

Karmaoui, M; Amaral, JS; Lajaunie, L; Puliyalil, H; Tobaldi, DM; Pullar, RC; Labrincha, JA; Arenal, R; Cvelbar, U
2016, JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 7, 20, 4039-4046.

A combined thermodynamics and first principles study of the electronic, lattice and magnetic contributions to the magnetocaloric effect in La0.75Ca0.25MnO3

Korotana, RK; Mallia, G; Fortunato, NM; Amaral, JS; Gercsi, Z; Harrison, NM
2016, JOURNAL OF PHYSICS D-APPLIED PHYSICS, 49, 28.

High thermoelectric performance in Bi2-xPbxBa2Co2Oy promoted by directional growth and annealing

Madre, MA; Costa, FM; Ferreira, NM; Costa, SIR; Rasekh, S; Torres, MA; Diez, JC; Amaral, VS; Amaral, JS; Sotelo, A
2016, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 36, 1, 67-74.

Magnetoelectric effect probe through ppm Fe doping in BaTiO3

Figueiras, FG; Amorim, CO; Amaral, J; Moreira, JA; Tavares, PB; Alves, E; Amaral, VS
2016, JOURNAL OF ALLOYS AND COMPOUNDS, 661, 495-500.

Modeling the magnetic properties and magnetocaloric effect of La0.7Sr0.3Mn0.9Ti0.1O3

Yahyaoui, S; Khalfaoui, M; Kallel, S; Kallel, N; Amaral, JS; Ben Lamine, A
2016, JOURNAL OF ALLOYS AND COMPOUNDS, 685, 633-638.

Nano-Localized Thermal Analysis and Mapping of Surface and Sub-Surface Thermal Properties Using Scanning Thermal Microscopy (SThM)

Pereira, MJ; Amaral, JS; Silva, NJO; Amaral, VS
2016, MICROSCOPY AND MICROANALYSIS, 22, 6, 1270-1280.

Structural, magnetic, magneto-transport properties and Bean-Rodbell model simulation of disorder effects in Cr3+ substituted La0.67Ba0.33MnO3 nanocrystalline synthesized by modified Pechini method

Oumezzine, M; Amaral, JS; Mompean, FJ; Hernandez, MG; Oumezzine, M
2016, RSC ADVANCES, 6, 38, 32193-32201.

Tailoring Ca3Co4O9 microstructure and performances using a transient liquid phase sintering additive

Sotelo, A; Costa, FM; Ferreira, NM; Kovalevsky, A; Ferro, MC; Amaral, VS; Amaral, JS; Rasekh, S; Torres, MA; Madre, MA; Diez, JC
2016, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 36, 4, 1025-1032.

Valorisation of industrial iron oxide waste to produce magnetic barium hexaferrite

Pullar, RC; Saeli, M; Novais, RM; Amaral, JS; Labrincha, JA
2016, CHEMISTRYSELECT, 1, 4, 819-825.

Scanning thermal microscopy: Nano-localized thermal analysis and mapping of surface and subsurface thermal properties

Pereira M.J., Amaral J.S., Silva N.J.O., Amaral V.S.
2016, Microscopy and Microanalysis, 22, 2-3.

Peculiar Magnetoelectric Coupling in BaTiO3:Fe-113 ppm Nanoscopic Segregations

Amorim, CO; Figueiras, F; Amaral, JS; Vaghefi, PM; Tavares, PB; Correia, MR; Baghizadeh, A; Alves, E; Rocha, J; Amaral, VS
2015, ACS APPLIED MATERIALS & INTERFACES, 7, 44, 24741-24747.

Crystal structure, magnetic and dielectric behavior of h-LuMnxO3 +/-delta ceramics (0.95 <= x <= 1.04)

Baghizadeh, A; Vieira, JM; Amaral, JS; Graca, MP; Soares, MR; Mota, DA; Amaral, VS
2015, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 395, 303-311.

Modeling the magnetic isotherms of (La0.56Ce0.14)Sr0.30MnO3 by a mean-field scaling method and estimation of magnetic entropy change

Yahyaoui, S; Khalfaoui, M; Kallel, S; Kallel, N; Amaral, JS; Ben Lamine, A
2015, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 393, 105-109.

Magnetic wood-based biomorphic Sr3Co2Fe24O41 Z-type hexaferrite ecoceramics made from cork templates

Pullar, RC; Marques, P; Amaral, J; Labrincha, JA
2015, MATERIALS & DESIGN, 82, 297-303.

Magnetic Properties of Ferrite Ceramics Made from Wastes

Pullar, RC; Hajjaji, W; Amaral, JS; Seabra, MP; Labrincha, JA
2014, WASTE AND BIOMASS VALORIZATION, 5, 1, 133-138.

Disorder effects in giant magnetocaloric materials

Amaral, JS; Amaral, VS
2014, PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 211, 5, 971-974.

Thermodynamics of the 2-D Ising Model From a Random Path Sampling Method

Amaral, JS; Goncalves, JN; Amaral, VS
2014, IEEE TRANSACTIONS ON MAGNETICS, 50, 11.

Magnetovolume Effects in Heusler Compounds via First-Principles Calculations

Goncalves, JN; Amaral, JS; Amaral, VS
2014, IEEE TRANSACTIONS ON MAGNETICS, 50, 11.

Spontaneous magnetization above T-C in polycrystalline La0.7Ca0.3MnO3 and La0.7Ba0.3MnO3

Turcaud, JA; Pereira, AM; Sandeman, KG; Amaral, JS; Morrison, K; Berenov, A; Daoud-Aladine, A; Cohen, LF
2014, PHYSICAL REVIEW B, 90, 2.

MAGNETOCALORIC EFFECTS IN MANGANITES REVISITED

Turcaud, JA; Morrison, K; Pereira, AM; Amaral, JS; Berenov, A; Daoud-Aladine, A; Sandeman, KG; Cohen, LF
2014, 6TH IIR/IIF INTERNATIONAL CONFERENCE ON MAGNETIC REFRIGERATION (THERMAG VI), 15-16.
ISBN: 978-2-362150-07-4

Strain induced enhanced ferromagnetic behavior in inhomogeneous low doped La0.95Sr0.05MnO3+delta

Das, S; Amaral, JS; De, K; Willinger, M; Goncalves, JN; Roy, A; Dhak, P; Giri, S; Majumder, S; Silva, CJR; Gomes, MJM; Mahapatra, PK; Amaral, VS
2013, APPLIED PHYSICS LETTERS, 102, 11.

The influence of annealing on the bimodal distribution of blocking temperatures of exchange biased bilayers

Ventura, J; Teixeira, JM; Paz, E; Amaral, JS; Costa, JD; Apolinario, A; Araujo, JP; Cardoso, S; Ferreira, R; Freitas, PP
2013, PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, 7, 9, 676-680.

Magnetoelectric coupling in multiferroic heterostructure of rf-sputtered Ni-Mn-Ga thin film on PMN-PT

Teferi, MY; Amaral, VS; Lounrenco, AC; Das, S; Amaral, JS; Karpinsky, DV; Soares, N; Sobolev, NA; Kholkin, AL; Tavares, PB
2012, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 324, 11, 1872-1876.

Organic-inorganic hybrid materials based on iron(III)-polyoxotungstates and 1-butyl-3-methylimidazolium cations

Santos, FM; Brandao, P; Felix, V; Domingues, MRM; Amaral, JS; Amaral, VS; Nogueira, HIS; Cavaleiro, AMV
2012, DALTON TRANSACTIONS, 41, 39, 12145-12155.

On the Curie temperature dependency of the magnetocaloric effect

Belo, JH; Amaral, JS; Pereira, AM; Amaral, VS; Araujo, JP
2012, APPLIED PHYSICS LETTERS, 100, 24.

On the Curie temperature dependency of the magnetocaloric effect (vol 100, 242407, 2012)

Belo, JH; Amaral, JS; Pereira, AM; Amaral, VS; Araujo, JP
2012, APPLIED PHYSICS LETTERS, 101, 7.

Enhanced ferromagnetism and glassy state in phase separated La0.95Sr0.05MnO3+delta

De, K; Das, S; Roy, A; Dhak, P; Willinger, M; Amaral, JS; Amaral, VS; Giri, S; Majumder, S; Silva, CJR; Gomes, MJM; Mahapatra, PK
2012, JOURNAL OF APPLIED PHYSICS, 112, 10.

Dynamic off-centering of Cr3+ ions and short-range magneto-electric clusters in CdCr2S4

Oliveira, GNP; Pereira, AM; Lopes, AML; Amaral, JS; dos Santos, AM; Ren, Y; Mendonca, TM; Sousa, CT; Amaral, VS; Correia, JG; Araujo, JP
2012, PHYSICAL REVIEW B, 86, 22.

Unveiling the (De)coupling of magnetostructural transition nature in magnetocaloric R5Si2Ge2 (R = Tb, Gd) materials

Pereira, AM; Kampert, E; Moreira, JM; Zeitler, U; Belo, JH; Magen, C; Algarabel, PA; Morellon, L; Ibarra, MR; Goncalves, JN; Amaral, JS; Amaral, VS; Sousa, JB; Araujo, JP
2011, APPLIED PHYSICS LETTERS, 99, 13.

Oxygen ordering in the high-T-c superconductor HgBa2CaCu2O6+delta as revealed by perturbed angular correlation

Mendonca, TM; Correia, JG; Haas, H; Odier, P; Tavares, PB; da Silva, MR; Lopes, AML; Pereira, AM; Goncalves, JN; Amaral, JS; Darie, C; Araujo, JP
2011, PHYSICAL REVIEW B, 84, 9.

On estimating the magnetocaloric effect from magnetization measurements

Amaral, JS; Amaral, VS
2010, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 322, 9-12, 1552-1557.

Estimating spontaneous magnetization from a mean field analysis of the magnetic entropy change

Amaral, JS; Silva, NJO; Amaral, VS
2010, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 322, 9-12, 1569-1571.

Prediction of realistic entropy behavior from mixed state magnetization data for first order phase transition materials

Das, S; Amaral, JS; Amaral, VS
2010, JOURNAL OF APPLIED PHYSICS, 107, 9.

Handling mixed-state magnetization data for magnetocaloric studies-a solution to achieve realistic entropy behaviour

Das, S; Amaral, JS; Amaral, VS
2010, JOURNAL OF PHYSICS D-APPLIED PHYSICS, 43, 15.

The effect of magnetic irreversibility on estimating the magnetocaloric effect from magnetization measurements

Amaral, JS; Amaral, VS
2009, APPLIED PHYSICS LETTERS, 94, 4.

High refrigerant capacity of PrNi5-xCox magnetic compounds exploiting its spin reorientation and magnetic transition over a wide temperature zone

Rocco, DL; Amaral, JS; Leitao, JV; Amaral, VS; Reis, MS; Das, S; Fernandes, RP; Araujo, JP; Pereira, AM; Tavares, PB; Martins, NV; Coelho, AA
2009, JOURNAL OF PHYSICS D-APPLIED PHYSICS, 42, 5.

Superferromagnetism in mechanically alloyed fcc Fe23Cu77 with bimodal cluster size distribution

Silva, NJO; Amaral, JS; Amaral, VS; Costa, BFO; Le Caer, G
2009, JOURNAL OF PHYSICS-CONDENSED MATTER, 21, 4.

Percolation processes and spin-reorientation of PrNi5-xCox

Rocco, DL; Amaral, JS; Leitao, JV; Amaral, VS; Reis, MS; Fernandes, RP; Pereira, AM; Araujo, JP; Martins, NV; Tavares, PB; Coelho, AA
2009, PHYSICAL REVIEW B, 79, 1.

The effect of chemical distribution on the magnetocaloric effect: A case study in second-order phase transition manganites

Amaral, JS; Tavares, PB; Reis, MS; Araujo, JP; Mendonca, TM; Amaral, VS; Vieira, JM
2008, JOURNAL OF NON-CRYSTALLINE SOLIDS, 354, 47-51, 5301-5303.

Characterization of electrodeposited Ni and Ni80Fe20 nanowires

Leitao, DC; Sousa, CT; Ventura, J; Amaral, JS; Carpinteiro, F; Pirota, KR; Vazquez, M; Sousa, JB; Araujo, JP
2008, JOURNAL OF NON-CRYSTALLINE SOLIDS, 354, 47-51, 5241-5243.

Studies of local fields in the Pr1-xCaxMnO3 system using perturbed angular correlation spectroscopy

Lopes, AML; Araujo, JP; Mendonca, TM; Amaral, JS; Pereira, AM; Tavares, PB; Amaral, VS; Correia, JG
2008, JOURNAL OF NON-CRYSTALLINE SOLIDS, 354, 47-51, 5315-5317.

Influence of the Magnetic Anisotropy on the Magnetic Entropy Change of Ni2Mn(Ga, Bi) Memory Shape Alloy

Leitao, JCV; Rocco, DL; Amaral, JS; Reis, MD; Amaral, VBS; Fernandes, RP; Martins, NV; Tavares, PB
2008, IEEE TRANSACTIONS ON MAGNETICS, 44, 11, 3036-3039.

Phase Separation of La0.70-xErxSr0.30MnO3 and its Effect on Magnetic and Magnetocaloric Properties

Amaral, JS; Reis, MS; Araujo, JP; Mendonaca, TM; Tavares, PB; Amaral, VS; Vieira, JM
2008, ADVANCED MATERIALS FORUM IV, 587-588, 338-+.

Processing and phase separation of LSMO-based multiferroic composite ceramics

Song, GB; Amaral, JS; Amaral, VS; Kholkin, AL
2007, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 27, 13-15, 3941-3945.

A mean-field scaling method for first- and second-order phase transition ferromagnets and its application in magnetocaloric studies

Amaral, JS; Silva, NJO; Amaral, VS
2007, APPLIED PHYSICS LETTERS, 91, 17.

Tuning of magnetocaloric effect in ferromagnetic La-Sr manganites through Er and Eu doping

Amaral, JS; Reis, MS; Amaral, VS; Mendonca, TM; Araujo, JP; Tavares, PB; Vieira, JM
2006, ADVANCED MATERIALS FORUM III, PTS 1 AND 2, 514-516, 299-303.

Magnetocaloric effect in Er- and Eu-substituted ferromagnetic La-Sr manganites

Amaral, JS; Reis, MS; Amaral, VS; Mendonca, TM; Araujo, JP; Sa, MA; Tavares, PB; Vieira, JM
2005, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 290, 686-689.

Charge-ordering contribution to the magnetic entropy change of (Pr, Ca)MnO3 manganites

Reis, MS; Gomes, AM; Araujo, JP; Amaral, JS; Tavares, PB; Oliveira, IS; Amaral, VS
2005, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 290, 697-699.

Charge-ordering and magnetoelastic coupling effects on the magnetocaloric properties of manganites

Reis, MS; Gomes, AM; Araujo, JP; Tavares, PB; Amaral, JS; Oliveira, IS; Amaral, VS
2004, ACTA PHYSICA POLONICA A, 105, 1-2, 163-171.

Magnetoelastic coupling influence on the magnetocaloric effect in ferromagnetic materials

Amaral, VS; Amaral, JS
2004, JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 272, 2104-2105.

Magnetocaloric effect in manganites: Ferromagnetism and charge-ordering effects

Reis, MS; Gomes, AM; Araujo, JP; Tavares, PB; Amaral, JS; Oliveira, IS; Amaral, VS
2004, ADVANCED MATERIALS FORUM II, 455-456, 148-152.
ISBN: 0-87849-941-5

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