Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Coutrim, L. T."'
Autor:
Boldrin, M., Silva, A. G., Coutrim, L. T., Jesus, J. R., Macchiutti, C., Bittar, E. M., Bufaiçal, L.
Publikováno v:
Applied Physics Letters 117, 212402 (2020)
The spontaneous exchange bias (SEB) effect is a remarkable phenomenon recently observed in some reentrant spin-glass materials. Here we investigate the SEB in La$_{1.5}$(Sr$_{0.5-x}$Ba$_{x}$)CoMnO$_{6}$ double-perovskites, a system with multifarious
Externí odkaz:
http://arxiv.org/abs/2011.12933
Autor:
Bufaiçal, L., Sadrollahi, E., Litterst, F. J., Rigitano, D., Granado, E., Coutrim, L. T., Araújo, E. B., Fontes, M. B., Baggio-Saitovitch, E., Bittar, E. M.
Publikováno v:
Physical Review B 102, 024436 (2020)
The delicate balance between spin-orbit coupling, Coulomb repulsion and crystalline electric field interactions observed in Ir-based oxides is usually manifested as exotic magnetic behavior. Here we investigate the evolution of the exchange coupling
Externí odkaz:
http://arxiv.org/abs/2007.15318
La$_{1.5}$Ba$_{0.5}$CoMnO$_{6}$ is a re-entrant cluster glass material exhibiting a robust negative exchange bias (EB) effect even after being cooled from an unmagnetized state down to low temperature in zero magnetic field. Here we thoroughly invest
Externí odkaz:
http://arxiv.org/abs/2007.14976
Publikováno v:
Journal of Magnetism and Magnetic Materials 512, 167048 (2020)
In this work we propose an alternative model to explain the spontaneous exchange bias (SEB) effect observed in spin glass (SG)-like systems. As in a previously proposed model (Ref. 1), it is based on the unconventional dynamics of the SG-like moments
Externí odkaz:
http://arxiv.org/abs/2006.00230
Autor:
Coutrim, L. T., Rigitano, D., Macchiutti, C., Mori, T. J. A., Lora-Serrano, R., Granado, E., Sadrollahi, E., Litterst, F. J., Fontes, M. B., Baggio-Saitovitch, E., Bittar, E. M., Bufaiçal, L.
Publikováno v:
Physical Review B 100, 054428 (2019)
In the zero-field-cooled exchange bias (ZEB) effect the unidirectional magnetic anisotropy is set at low temperatures even when the system is cooled in the absence of external magnetic field. La$_{1.5}$Sr$_{0.5}$CoMnO$_{6}$ stands out as presenting t
Externí odkaz:
http://arxiv.org/abs/1909.05287
Publikováno v:
Journal of Magnetism and magnetic Materials 458, 105 (2018)
La$_{1.5}$Ca$_{0.5}$CoIrO$_{6}$ is a re-entrant spin-glass (SG) that exhibits antiferromagnetic and ferromagnetic couplings at $T\sim95$ and $\sim86$ K, respectively, and at $T\sim25$ K a SG phase emerges. In this work we investigated the effect of h
Externí odkaz:
http://arxiv.org/abs/1808.10403
Publikováno v:
Physical Review B 98, 064426 (2018)
The zero-field-cooled exchange bias (ZEB) effect is a remarkable phenomenon recently reported for some reentrant spin glass-like compounds. In this work, the time-evolution of magnetization is thoroughly investigated for two ZEB materials in order to
Externí odkaz:
http://arxiv.org/abs/1808.10305
Autor:
Bufaical, L., Finkler, R., Coutrim, L. T., Pagliuso, P. G., Grossi, C., Stavale, F., Baggio-Saitovitch, E., Bittar, E. M.
In this work we report the synthesis and structural, electronic and magnetic properties of La1.5Ca0.5CoMnO6 double-perovskite. This is a re-entrant spin cluster material which exhibits a non-negligible negative exchange bias effect when it is cooled
Externí odkaz:
http://arxiv.org/abs/1701.03496
Autor:
Coutrim, L. T., Bittar, E. M., Stavale, F., Garcia, F., Baggio-Saitovitch, E., Abbate, M., Mossanek, R. J. O., Martins, H. P., Tobia, D., Pagliuso, P. G., Bufaiçal, L.
Publikováno v:
Phys. Rev. B 93, 174406 (2016)
We report on the study of magnetic properties of the La1.5Ca0.5CoIrO6 double perovskite. Via ac magnetic susceptibility we have observed evidence of weak ferromagnetism and reentrant spin glass behavior on an antiferromagnetic matrix. Regarding the m
Externí odkaz:
http://arxiv.org/abs/1604.07804
Autor:
Bufaiçal, L., Sadrollahi, E., Litterst, F. J., Rigitano, D., Granado, E., Coutrim, L. T., Araújo, E. B. [UNESP], Fontes, M. B., Baggio-Saitovitch, E., Bittar, E. M.
Publikováno v:
Web of Science
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Scopus
Repositório Institucional da UNESP
Universidade Estadual Paulista (UNESP)
instacron:UNESP
Scopus
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Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::8fdedc340793d5346d566899dcde09af