Magnetic behaviour of Cu2FeGeSe4

Magnetic properties of electron-doped Y1−xCexMnO3 compounds

“…The w m value is found to be comparable to those reported for Cu 2 FeGeSe 4 alloy [29]. By assuming m s ¼ m eff , we have estimated the concentration of BMP, which was found to be in the order of 10 20 cm À3 .…”

Magnetic properties of Cu2Cd1−zMnzGeSe4 and Cu2Cd1−zFezGeSe4 alloys

“…This type of behavior has been observed previously in similar materials [22,23] and can be attributed to crystallographic canting of the mainly antiferromagnetic spins. Also, if there are bound magnetic polarons in the material, as it has been observed in some cases [1,8,9], the interaction between the spontaneous spins of the BMPs could produce ferromagnetic alignment and a resultant spin which could be responsible for the observed hysteresis.…”

“…The crystal structure of various I 2 -II-IV-VI 4 compounds has been investigated by several authors [1,[4][5][6]. The crystallographic and magnetic properties of the Cu 2 FeGeSe 4 and Cu 2 FeGeTe 4 compounds have been given in earlier works [7][8][9]. In more recent work, lattice parameter values and phase transitions for the Cu 2 Cd 1−z Mn z GeSe 4 (CMS), Cu 2 Cd 1−z Fe z GeSe 4 (CFS) and Cu 2 Zn 1−z Fe z GeSe 4 alloy systems have been studied [10,11].…”

Ferromagnetism in Mechanically Milled Sn1−x Co x O2 (x=0 to 0.10) Compounds

“…The intrinsic saturation magnetization, M si was determined from the above plots and are found to be 2.9 emu/g, 2.6 emu/g, 2.2 emu/g for x = 0.02, 0.07, and 0.10 samples, respectively, at 290 K. Their corresponding values at 20 K are found to be 5.9 emu/g, 4.9 emu/g, and 3.3 emu/g. The data were analyzed in terms of bound magnetic polaron model (BMP) [35][36][37], i.e., by fitting to the following equation…”