首页 | 本学科首页   官方微博 | 高级检索  
     


On the n-p phase transitions in Mn1-x Cu x Cr2S4
Authors:M. Gogołowicz  T. Groń  Z. Ujma  J. Warczewski
Affiliation:Silesian University, Institute of Physics , ul. Uniwersytecka 4, PL-40007, Katowice, Poland
Abstract:The Seebeck coefficient for polycrystalline samples of: 1. Mn1-x Cu x Cr2S4 (0.0 ≤ x < 1.00) at 313 K and 2. MnCr2S4 between 313–393 K is presented. The electrical resistivity of Mn1-x Cu x Cr2S4 as a function of x at the room temperature is also presented. The n-p phase transition is observed in two cases: 1. on changing x at constant temperature (313 K) for 0.0 ≤ x ≤ 0.1 and 2. on changing temperature for MnCr2S4 at about 326 K. The first case is probably connected with the noncollinear ferromagnetic interaction of the chromium 3+ and 4+ ions. The second case follows from the strong ferrimagnetic interaction of the Mn2+ and Cr3+ ions in pure MnCr2S4.
Keywords:
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号