| Texto completo | |
| Autor(es): |
Andrade, Margareth
;
Maffei, Mariana Lanzoni
;
Salgado Alves, Leandro Marcos
;
Moreira dos Santos, Carlos Alberto
;
Ferreira, Bento
;
Sartori, Antonio Fernando
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 15, n. 6, p. 5-pg., 2012-11-01. |
| Resumo | |
High quality KMo4O6 single crystals with tetragonal structure (space group P4/mbm) have been prepared by fused salt electrolysis. The crystals were studied by scanning electron microscopy (SEM), X-ray diffractometry, electrical resistivity, and magnetization measurements. X-ray powder diffraction patterns and SEM have given some information on the growth of single crystals. Electrical resistivity as a function of temperature shows that the KMo4O6 compound is a bad metal with resistivity change of approximately 30% in the temperature range from 2 to 300K. A metal-insulator transition (MIT), observed at approximately 110K, has been also confirmed for this material. Magnetization as a function of temperature agrees with previous report, however a magnetic ordering has been observed in M(H) curves in the whole temperature range. (AU) | |
| Processo FAPESP: | 09/54001-2 - EMU: aquisição de equipamento cryo-free para caracterização de propriedades magnéticas por magnetometria de amostra vibrante (VSM) |
| Beneficiário: | Carlos Alberto Moreira dos Santos |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Equipamentos Multiusuários |
| Processo FAPESP: | 09/14524-6 - Re-liquefatora para uso em MagLab Oxford de 9T |
| Beneficiário: | Carlos Alberto Moreira dos Santos |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 10/06637-2 - Estrutura cristalina e propriedades físicas do condutor anômalo KxMoO2-d |
| Beneficiário: | Leandro Marcos Salgado Alves |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |