Magnetic behavior of nanocrystalline LaMn2Ge2

[摘要] The compound, LaMn2Ge2, crystallizing in ThCr2Si2-type tetragonal crystal structure, has been known to undergo ferromagnetic order below ( T-C =) 326 K. In this article, we report the magnetic behavior of nanocrystalline form of this compound, obtained by high-energy ball milling. T-C of this compound is reduced marginally for the nanoform, whereas there is a significant reduction of the magnitude of the saturation magnetic moment with increasing milling time. The coercive field however increases with decreasing particle size. Thus, this work provides a route to tune these parameters by reducing the particle size in this ternary family. (C) 2008 Elsevier B. V. All rights reserved.

[发布日期] 2008-11-01

[关键词] LaMn2Ge2;nanocrystal;magnetic moment;coercive field;magnetic ordering