Výsledky vyhledávání - "P. H. O. Lopes"

APRENDIZAGEM MOTORA E FILOSOFIA DA DIFERENÇA: possibilidades e deslocamentos

Autor: P. H. O. Lopes

Publikováno v: PESQUISA EM EDUCAÇÃO FÍSICA SOB A ÓTICA DAS CIÊNCIAS HUMANAS

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ab18f36aabf82714f96fb187507808af
https://doi.org/10.24824/978652511434.7.173-204

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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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The influence of crystalline electrical field on magnetic and magnetocaloric properties in Er1−yTbyAl2 compounds

Autor: B.P. Alho, P.O. Ribeiro, A. Magnus G. Carvalho, E.P. Nóbrega, A. Caldas, P. H. O. Lopes, V.S.R. de Sousa, P.J. von Ranke, T.S.T. Alvarenga

Publikováno v: Journal of Magnetism and Magnetic Materials. 442:265-269

We report the anisotropy of magnetic field-induced entropy change in rare earth Er 1 - y Tb y Al 2 compounds (y = 0.00, 0.25, 0.50, 0.75 and 1.00). In the present work, we use a model Hamiltonian that includes the crystalline electrical field anisotr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c1dbf0ba81961b3fc80504726dc45280
https://doi.org/10.1016/j.jmmm.2017.06.120

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Theoretical investigations on magnetic entropy change in amorphous and crystalline systems: Applications to RAg (R=Tb, Dy, Ho) and GdCuAl

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

Publikováno v: Journal of Magnetism and Magnetic Materials. 369:34-39

We report theoretical investigations on the magnetic entropy changes in amorphous systems through two different assumptions. In the first assumption, the HPZ-anisotropic model is considered to deal with the random direction of magnetic moments, where

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::81d5ba937a6d95a4d4c9d567928b739a
https://doi.org/10.1016/j.jmmm.2014.06.026

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Theoretical investigation on the magnetic and electric properties in TbSb compound through an anisotropic microscopic model

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

Publikováno v: Journal of Applied Physics. 119:183903

We report the strong correlations between the magnetoresistivity and the magnetic entropy change in the cubic antiferromagnetic TbSb compound. The theoretical investigation was performed through a microscopic model which takes into account the crysta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ee4227e84afccefa248e05a199125ad9
https://doi.org/10.1063/1.4949276

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Electric field triggering the spin reorientation and controlling the absorption and release of heat in the induced multiferroic compound EuTiO3

Autor: V.S.R. de Sousa, P. H. O. Lopes, P.J. von Ranke, A. Magnus G. Carvalho, T.S.T. Alvarenga, E.P. Nóbrega, N.A. de Oliveira, B.P. Alho, A. Caldas, Sergio Gama, P.O. Ribeiro

Publikováno v: Journal of Applied Physics. 118:243901

We report remarkable results due to the coupling between the magnetization and the electric field induced polarization in EuTiO3. Using a microscopic model Hamiltonian to describe the three coupled sublattices, Eu-(spin-up), Eu-(spin-down), and Ti-(m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::54935850c472b38ba618ba573ceef11a
https://doi.org/10.1063/1.4938740

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Calculations of the magnetic entropy change in amorphous through a microscopic anisotropic model: Applications to Dy70Zr30 and DyCo3.4 alloys

Autor: T.S.T. Alvarenga, B.P. Alho, P.J. von Ranke, Gyl Dayara Alves de Carvalho, V.S.R. de Sousa, P. H. O. Lopes, P.O. Ribeiro, N.A. de Oliveira, A. Caldas, A. Magnus, E.P. Nóbrega

Publikováno v: Journal of Applied Physics. 116:143903

We report theoretical investigations on the magnetocaloric effect, described by the magnetic entropy change in rare earth—transition metal amorphous systems. The model includes the local anisotropy on the rare earth ions in Harris-Plischke-Zuckerma

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d81d7e7df4dcd6c7068e2fb510b3c8c5
https://doi.org/10.1063/1.4897911

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