High resolution neutron powder diffraction studies of manganese-and chromium-substituted Y2Fe14B compounds reveal the presence of a substantial preferential site occupation of manganese and chromium on the six non-equivalent transition metal sites. In particular, the 8j2 site is found to be well populated by manganese and chromium atoms. The observed distribution of magnetization in manganese-substituted compounds suggests marked local environmental effects and a substantial contribution of manganese to the site magnetization. A ferromagnetic coupling at the 8j2 site and a more complex situation at the other sites is suggested. An even more enhanced local environmental effect on the distribution of the magnetization is observed in chromium-substituted compounds.
Magnetic Structure and Preferential Site Occupation in Mn and Cr substituted Y2Fe14B Compounds / Moze, Oscar; L., Pareti; Solzi, Massimo; F., Bolzoni; W. I. F., David; W. T. A., Harrison; A., Hewat. - In: JOURNAL OF THE LESS-COMMON METALS. - ISSN 0022-5088. - 136:(1988), pp. 375-383. [10.1016/0022-5088(88)90440-7]
Magnetic Structure and Preferential Site Occupation in Mn and Cr substituted Y2Fe14B Compounds
MOZE, Oscar;SOLZI, Massimo;
1988-01-01
Abstract
High resolution neutron powder diffraction studies of manganese-and chromium-substituted Y2Fe14B compounds reveal the presence of a substantial preferential site occupation of manganese and chromium on the six non-equivalent transition metal sites. In particular, the 8j2 site is found to be well populated by manganese and chromium atoms. The observed distribution of magnetization in manganese-substituted compounds suggests marked local environmental effects and a substantial contribution of manganese to the site magnetization. A ferromagnetic coupling at the 8j2 site and a more complex situation at the other sites is suggested. An even more enhanced local environmental effect on the distribution of the magnetization is observed in chromium-substituted compounds.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
