Výsledky vyhledávání - "J.C.G. Tedesco"

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Magnetic and magnetocaloric properties in Gd1−yPryNi2 compounds

Autor: J.C.G. Tedesco, A. Caldas, A.M.G. Carvalho, N.A. de Oliveira, E.P. Nóbrega, V.S.R. de Sousa, P.O. Ribeiro, B.P. Alho, P. H. O. Lopes, Adelino A. Coelho, P.J. von Ranke, T.S.T. Alvarenga

Publikováno v: Journal of Magnetism and Magnetic Materials. 449:308-312

In this work, we report the magnetic and magnetocaloric properties of the Gd1−yPryNi2 compounds from both experimental and theoretical points of view. It is worth noting that this series shows a variety of magnetic arrangements depending on the Pr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3c74b1e5503760b81feca1ff3c2a37c5
https://doi.org/10.1016/j.jmmm.2017.10.044

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Akademický článek

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Akademický článek

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Unit cell volume reduction of Gd5(Si,Ge)4 nanoparticles controlled by bulk compressibility

Autor: N.R. Checca, André Pereira, J. H. Belo, Mario S. Reis, Flávio Garcia, A. Poulain, V.M. Andrade, J.C.G. Tedesco, João P. Araújo, Bernardo Almeida, André L. Rossi

Publikováno v: Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP

The production of Gd5(Si,Ge)4 compounds in reduced dimensionality, through pulsed laser deposition (PLD), have shown their potential for practical applications. Here, we present nanoparticles ranging from 10 to 27 nm of average particle size of Gd5(S

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8f6aa621e82bc1dfd10f2bf355faea7
https://doi.org/10.1016/j.jallcom.2020.156384

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Experimental evidences of enhanced magnetocaloric properties at room temperature and half-metallicity on Fe 2 MnSi-based Heusler alloys

Autor: R.J. Caraballo Vivas, J.C.G. Tedesco, Mario S. Reis, D.L. Rocco, S.S. Pedro, C. Cruz, Adelino A. Coelho, A. Magnus G. Carvalho

Publikováno v: Materials Chemistry and Physics. 174:23-27

Heusler alloys are widely studied due to their interesting structural and magnetic properties, like magnetic shape memory ability, coupled magneto-structural phase transitions and half-metallicity; ruled, for many cases, by the valence electrons numb

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8661f4692a8efadb27f956a1fcde08ea
https://doi.org/10.1016/j.matchemphys.2016.02.045

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Magnetic and magnetocaloric properties of La0.6Ca0.4MnO3 tunable by particle size and dimensionality

Autor: S.S. Pedro, J.C.G. Tedesco, Vivian M. Andrade, Mario S. Reis, André L. Rossi, D.L. Rocco, Adelino A. Coelho, R.J. Caraballo Vivas

Publikováno v: Acta Materialia. 102:49-55

Manganites have been attracted considerable attention due to some intriguing magnetic properties, such as magnetoresistance, spin glass behavior and superparamagnetism. In recent years, some studies point to the effect of particle size and dimensiona

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::483ff744f7d5e61c126f88a982a79449
https://doi.org/10.1016/j.actamat.2015.08.080

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Magnetic and magnetocaloric properties of (Gd,Nd)5Si4 compounds

Autor: W. Imamura, E. O. Usuda, G. Rangel, A.M.G. Carvalho, J.C. Patiño, Catarina Alves, A. M. Gomes, L. S. Paixão, J.C.G. Tedesco

Publikováno v: Journal of Magnetism and Magnetic Materials. 493:165693

Since the discovery of the giant magnetocaloric effect in the compound Gd5Si2Ge2, rare earth based intermetallics of the form R5(Si,Ge)4 have been largely investigated in their structural and magnetic properties. From the parent compounds Gd5Si4 and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e56e6780194b6365fa4b0c2b7b976d01
https://doi.org/10.1016/j.jmmm.2019.165693

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

Autor: Nuno M. Fortunato, A.M.G. Carvalho, João S. Amaral, Mario S. Reis, J.C.G. Tedesco, R.J. Caraballo-Vivas, D.R. Sanchez, J. N. Gonçalves, N.R. Checca

Publikováno v: Intermetallics. 111:106502

Half-metallic compounds present two spin bands with contrasting behaviors, resulting in 100% of spin polarization at the Fermi level; property of crucial importance for applications in spintronic devices. Materials presenting this characteristic are,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dd94e19e7ad6ba501b8f025254ad47bd
https://doi.org/10.1016/j.intermet.2019.106502

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Photothermally modulated magnetic resonance applied to the study of the magnetic phase transition in gadolinium thin films

Autor: J.C.G. Tedesco, M. de Moraes, Antonio Manoel Mansanares, F. Pedrochi, G.Z. Gadioli, E. C. da Silva, M. E. Soffner, A. O. Guimarães

Publikováno v: Thin Solid Films. 520:3634-3640

We explore the photothermally modulated magnetic resonance technique to investigate gadolinium thin films deposited on fused quartz substrate, as a function of thickness and thermal treatment, around the magnetic phase transition temperature. It has

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c0a4db02fb11743f22538de0f611dbcc
https://doi.org/10.1016/j.tsf.2011.12.042

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