Magnetic and crystalline properties of GdxLa1-xFeSi compoundsстатья
Информация о цитировании статьи получена из
Scopus,
Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The magnetic and crystalline properties of the polycrystalline compounds GdxLa1-xFeSi (x = 0, 0.1, 0.3, 0.45, 0.55, 0.65, 0.8, 1) and single crystal GdFeSi are studied. All the compounds have the CeFeSi tetragonal structure. The temperature dependences of the magnetization and initial susceptibility show that ferromagnetic behavior is characteristic of these compounds; the exception is the Pauli paramagnetic LaFeSi. Substitution of gadolinium by the nonmagnetic lanthanum leads to a sharp drop in the Curie temperature Tc, and to a reduction in the saturation magnetic moment μ0, effective magnetic moment μeff, and paramagnetic Curie temperature Θp. Measurements on single crystal GdFeSi imply that the easy magnetization axis of this compound is the c axis and the anisotropy field is Ha∼4 kOe. No magnetic moment was observed on the iron ion in any of these compounds.