Zobrazeno 1 - 10
of 130
pro vyhledávání: '"Luis Ghivelder"'
Ni-Mn-Ga based alloys are widely studied due to their potential for practical applications, making use of their martensitic transformations. However, hysteresis is a long-standing drawback that reduces the chance of transferring these alloys from the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b200acce9fe5e52f3801814b177bfac
http://hdl.handle.net/10044/1/101309
http://hdl.handle.net/10044/1/101309
Autor:
G. M. Azevedo, Luis Ghivelder, D. R. Sanchez, Maximiliano J. M. Zapata, Mucio A. Continentino, L. P. Rabello, R. Tartaglia, C. P. C. Medrano, Gaston Garbarino, D. C. Freitas, M. D. Núñez-Regueiro, J. A. Rodríguez-Velamazán, Carlos B. Pinheiro, C. W. Galdino, A. A. Mendonça, E. Granado
Publikováno v:
Physical Review B. 104
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14e5e0800c538a83f9ebbddf9f624b0d
https://doi.org/10.1103/physrevb.104.195151
https://doi.org/10.1103/physrevb.104.195151
Autor:
John E. Halpin, Luis Ghivelder, David Boldrin, Xavier Moya, Julie B. Staunton, Eduardo Mendive-Tapia, Alexandra S. Gibbs, Lesley F. Cohen, Jan Zemen, Josep-Lluís Tamarit, Pol Lloveras, A. M. Gomes, Araceli Aznar
Publikováno v:
Physical Review B. 104
The magnetically frustrated manganese nitride antiperovskite family displays significant changes of entropy under hydrostatic pressure that can be useful for the emerging field of barocaloric cooling. Here we show that barocaloric properties of metal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79217e25281af6bfa1a6b40db53d2659
https://doi.org/10.1103/physrevb.104.134101
https://doi.org/10.1103/physrevb.104.134101
Autor:
P. V. Lopes, Zhaoyu Liu, Luis Ghivelder, Shiliang Li, M. P. Kern, Shyam Sundar, Huiqian Luo, S. Salem-Sugui
Publikováno v:
Physical Review B. 102
Second magnetization peak (SMP) in hole-doped cuprates and iron pnictide superconductors has been widely explored. However, similar feature in the family of electron-doped cuprates is not common. Here, we report the vortex dynamics study in the singl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31905176e4c02afaf7325c001b77436b
https://doi.org/10.1103/physrevb.102.064509
https://doi.org/10.1103/physrevb.102.064509
Autor:
A.A. Mendonça, Lesley F. Cohen, A. M. Gomes, Hanlin Gu, Luis Ghivelder, P.L. Bernardo, Richard D. James
Thermal hysteresis is recognized as one of the main drawbacks for cyclical applications of magnetocaloric and ferromagnetic shape memory materials with first order transformations. As such, the challenge is to develop strategies that improve the comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c0d8bcaf0a3ba15722545dacdcb2b3d
http://arxiv.org/abs/2007.07485
http://arxiv.org/abs/2007.07485
Polycrystalline Heusler compounds Ni2Mn0.75Cu0.25Ga0.84Al0.16 with a martensitic transition between ferromagnetic phases and Ni2Mn0.70Cu0.30Ga0.84Al0.16 with a magnetostructural transformation were investigated by magnetization and thermal measuremen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15fc64ffd027eb54eae93738f3ccd361
Autor:
A.A. Mendonça, G.G. Eslava, S. J. Stuard, Luis Ghivelder, A. M. Gomes, L.E.L. Silva, J.F. Jurado, Lesley F. Cohen
Ferromagnetic Ni2MnGa-based alloys play an important role in technological fields, such as smart actuators, magnetic refrigeration and robotics. The possibility of obtaining large non-contact deformation induced by an external perturbation is one of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::43cac00a4fb52b166b2b377ee92d21cf
Autor:
Joaquín Sacanell, M. Quintero, Bernardo Patricio Sievers, F. Parisi, L. Granja, Luis Ghivelder
Publikováno v:
Journal of Magnetism and Magnetic Materials. 456:212-216
In this work we address the interplay between two phenomena which are signatures of the out-of-equilibrium state in phase separated manganites: irreversibility against thermal cycling and aging/rejuvenation process. The sample investigated is La0.5Ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::01b9fb485e6ee380719439db9294b13e
https://doi.org/10.1016/j.jmmm.2018.02.035
https://doi.org/10.1016/j.jmmm.2018.02.035
Publikováno v:
Journal of Magnetism and Magnetic Materials. 535:168059
In this work we investigate the critical behavior of two manganite compounds, Pr0.5Sr0.5MnO3 (PSMO) and Pr0.5Sr0.41Ca0.09MnO3 (PSCMO). These are complex magnetic systems, which undergo a paramagnetic to ferromagnetic phase transition on cooling, foll
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64c5a74390e71be6e00143b152e36ece
https://doi.org/10.1016/j.jmmm.2021.168059
https://doi.org/10.1016/j.jmmm.2021.168059
Autor:
M. Hsini, Luis Ghivelder
Publikováno v:
Physica B: Condensed Matter. 615:413055
In this work, we demonstrate that La0.225Pr0.4(Ca1−xSrx)0.375MnO3 manganites with 0 ≤ x ≤ 0.10 , exhibit a discontinuous first order ferromagnetic-paramagnetic transition at temperatures ~ 230–240 K, which evolves to a continuous second order
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55565f32533e5a6e9c3ccb7c46a19a2c
https://doi.org/10.1016/j.physb.2021.413055
https://doi.org/10.1016/j.physb.2021.413055