| Texto completo | |
| Autor(es): |
Vasques, Gustavo Gomes
;
Dutra, Mateus
;
Sabino, Pedro Caetano
;
Dias, Juliana Goncalves
;
Cagigas, Julian Andres Munevar
;
Benvenho, Adriano Reinaldo Vicoto
;
Avila, Marcos A.
Número total de Autores: 7
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICA B-CONDENSED MATTER; v. 714, p. 6-pg., 2025-10-01. |
| Resumo | |
Single crystals of GdPt2Si2 were grown using the Sn flux method, crystallizing in the CaBe2Ge2-type tetragonal structure with space group P4/nmm. Electrical resistivity, specific heat, and magnetization data revealed the presence of a double magnetic transition with TN approximate to 8.4 K and T0 approximate to 6.8 K. Analysis of the specific heat data suggest amplitude-modulated and equal-moment antiferromagnetic orderings, respectively. Field-induced magnetization and magnetic susceptibility data show a metamagnetic transition in the H parallel to a direction at 2 K, as well as the suppression of the magnetic transition located at T0 with increasing external magnetic field. Electron Spin Resonance (ESR) shows the Gd3+ resonance followed by a small second resonance. Peak-to-peak linewidth (Delta Hpp) analysis reveals slight broadening at T similar to 120 K, indicating an increase in magnetic fluctuations at high temperatures. Ferromagnetic (FM) local polarization at high temperatures is also observed through the g-factor analysis, which shows a notable positive shift (Delta g). Our results establish the fundamental physical properties of this material to aid in further understanding of the magnetism in the RPt2Si2 series and related non-centrosymmetric systems. (AU) | |
| Processo FAPESP: | 17/20989-8 - EMU concedido no processo 11/19924-2: atualização do PPMS para Evercool-II mais peças, USD 271,932.00 |
| Beneficiário: | Letície Mendonça Ferreira |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Equipamentos Multiusuários |
| Processo FAPESP: | 17/10581-1 - Fenômenos emergentes em sistemas de dimensões reduzidas |
| Beneficiário: | Pascoal Jose Giglio Pagliuso |
| Modalidade de apoio: | Auxílio à Pesquisa - Projetos Especiais |