| Texto completo | |
| Autor(es): |
de Oliveira, Adilson Jesus
;
de Oliveira, Leticia Maria
;
de Camargo, Paulo Cesar
;
de Souza, Paulo Eduardo Narcizo
;
Yokaichiya, Fabiano
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | AIP ADVANCES; v. 13, n. 1, p. 4-pg., 2023-01-01. |
| Resumo | |
Chromium-rich Cr-V alloys exhibit three phases. The paramagnetic phase (P) above Neel temperature (T-N), a transverse polarization spin-density-wave (SDW) phase (AF(1)) below T-N and above the spin-flip temperature (T-SF), when the longitudinal polarization SDW phase (AF(2)) is formed. In the paramagnetic phase, Cr exhibit a Pauli susceptibility with weak temperature dependence. Otherwise, the introduction of small amounts of V in Cr not only decreases T-N continuously, but also induces a Curie-Weiss behavior (CW) that we associate with local magnetic moments. This behavior is limited up to 0.67%V and magnetic fields of 15 kOe and was also observed for different Cr alloys. The origin of local magnetic moments has been associated with the establishment of local spin-density waves (LSDW) around V impurities. In this work, we presented an investigation of the effects of local magnetic moments in antiferromagnetic phases in Cr-V alloys. The magnetic susceptibility measurements around the spin-flip transition suggest that the local-SDW induces the strong magnetic anisotropy in the long-range order of the spin-density wave as it is revealed in the thermomagnetic results.(c) 2023 Author(s). (AU) | |
| Processo FAPESP: | 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais |
| Beneficiário: | Elson Longo da Silva |
| Modalidade de apoio: | Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs |