| Revista: | Brazilian journal of physics |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000403537 |
| ISSN: | 0103-9733 |
| Autores: | Paduani, C1 Migliavacca, A1 Krause, J.C2 Ardisson, J.D3 Yoshida, M.I4 |
| Instituciones: | 1Universidade Federal de Santa Catarina, Departamento de Fisica, Florianopolis, Santa Catarina. Brasil 2Universidade Regional Integrada do Alto Uruguai e das Missoes, Departamento de Ciencias Exatas e da Terra, Santo Angelo, Rio Grande do Sul. Brasil 3Comissao Nacional de Energia Nuclear, Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, Minas Gerais. Brasil 4Universidade Federal de Minas Gerais, Instituto de Ciencias Exatas, Belo Horizonte, Minas Gerais. Brasil |
| Año: | 2007 |
| Periodo: | Dic |
| Volumen: | 37 |
| Número: | 4 |
| Paginación: | 1284-1287 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico |
| Resumen en inglés | Co2+x+yMn1−xAl1−y intermetallic compounds have been prepared by arc melting and studied with X-ray diffraction and magnetization measurements to ascertain the effect of deviations of composition from the stoichiometry on the ferromagnetism of this system. Hysteresis loops registered at room temperature show a soft ferromagnetic behavior in excess Co. In off-stoichiometric alloys the saturation magnetization is lower than in Co2MnAl, whereas the Curie temperature TC is higher in all the studied alloys. TC varies substantially with variations in composition and increases with the Mn content. In the source of this behavior a volume effect is inferred which is expected to lead to strengthened ferromagnetic exchanges |
| Disciplinas: | Física y astronomía, Ingeniería |
| Palabras clave: | Física de materia condensada, Ingeniería de materiales, Ferromagnetismo, Aleaciones Heusler, Cobalto, Manganeso, Aluminio |
| Keyword: | Physics and astronomy, Engineering, Condensed matter physics, Materials engineering, Ferromagnetism, Heusler alloys, Cobalt, Manganese, Aluminum |
| Texto completo: | Texto completo (Ver PDF) |
