Local inspection of magnetic properties in GdMnIn by measuring hyperfine interactions

Autor(es):Mostrar menos -

Cabrera-Pasca, G. A. ^[1] ; Magno, J. F. ^[1] ; Ferreira, W. L. ^[2] ; Campos, A. C. ^[2] ; Bosch-Santos, B. ^[2] ; Sales, T. S. N. ^[2] ; Pereira, L. F. D. ^[2] ; Burimova, A. ^[2] ; Saxena, R. N. ^[2] ; Freitas, R. S. ^[3] ; Carbonari, A. W. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Fed Para, Fac Ciencias Exatas & Tecnol, BR-68440000 Abaetetuba, PA - Brazil

^[2] Univ Sao Paulo, Inst Pesquisas Energet & Nucl, IPEN CNEN SP, BR-05508000 Sao Paulo, SP - Brazil

^[3] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: AIP ADVANCES; v. 11, n. 1 JAN 1 2021.
• Citações Web of Science: 0

Resumo

GdMnIn is reported to crystallize in the hexagonal MgNi2-type structure presenting a spin-glass behavior with no magnetic order attributed to the triangular spin frustration of magnetic ions. In the present work, FC-ZFC magnetization, specific heat and AC susceptibility measurements along with the local magnetic exchange measured by hyperfine interactions at In sites are used to investigate the magnetic behavior in GdMnIn compound. The ZFC-FC magnetization curves exhibit an inflection which was ascribed to the antiferromagnetic transition at T-N= 145 K. These curves also give an indication of thermomagnetic irreversibility at 118 K, which along with the absence of inflection in specific heat results might be associated to spin-glass behavior. Results of AC susceptibility and magnetic hyperfine field measured using In-111(Cd-111) probe nuclei carried out by perturbed angular correlations (PAC) technique did not show evidence of spin-glass behavior. The thermomagnetic irreversibility in FC-ZFC curves along with results of hyerfine interactions suggest the presence of magneto-crystalline anisotropy effects and a weak long-range coupling in GdMnIn. (AU)

• Processo FAPESP: 19/15620-0 - Adequando nanoparticulas de MFe2O4 (M=Co,Ni) para aplicações biomédicas in vivo: dopagem com elementos de terras raras e recobimento biocompatível
• Beneficiário: Anastasia Nikolaevna Burimova
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado