Pressure effect on magnetic properties of RCo.sub.12./sub. B.sub.6./sub. (R=Y, Ce) compounds

0342329 - FZÚ 2011 RIV NL eng J - Journal Article
Arnold, Zdeněk - Isnard, O. - Mayot, H. - Míšek, Martin - Kamarád, Jiří
Pressure effect on magnetic properties of RCo₁₂ B₆ (R=Y, Ce) compounds.
Journal of Magnetism and Magnetic Materials. Roč. 322, 9-12 (2010), s. 1117-1119. ISSN 0304-8853. E-ISSN 1873-4766.
[Joint European Magnetic Symposia (JEMS 08) /4./. Dublin, 14.09.2008-19.09.2008]
R&D Projects: GA ČR GA202/09/0030
Institutional research plan: CEZ:AV0Z10100521
Keywords : pressure effect * magnetic property * magnetization * Curie temperature
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 1.689, year: 2010
www.elsevier.com/locate/jmmm

The effect of pressure on magnetic properties of YCo12B6 and CeCo12B6 was studied in temperature range 5-300K at pressures up to 9kbar.The Curie temperature TC and spontaneous magnetization MS decrease with pressure for both compounds.The decrease can be attributed mostly tothe volume dependence of both,the Co magnetic moment and the exchange interactions.The hybridization of the p- d states as a consequence of small distances between the Co and B atoms can be one reason of the relatively low pressure effects in YCo12B6.Higher volume sensitivity of magnetic properties of CeCo12B6 in comparison with YCo12B6 can be attributed to the pressure induced changes of the Ce f- and Co d- states.
Permanent Link: http://hdl.handle.net/11104/0185088