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|Title:||Observation of magnetization reversal and negative magnetization in Sr(2)YbRuO(6)|
|Publisher:||IOP PUBLISHING LTD|
|Citation:||JOURNAL OF PHYSICS-CONDENSED MATTER, 20(23), -|
|Abstract:||Detailed magnetic properties of the compound Sr(2)YbRuO(6) are presented here. The compound belongs to the family of double perovskites forming a monoclinic structure. Magnetization measurements reveal clear evidence for two components of magnetic ordering aligned opposite to each other, leading to a magnetization reversal, compensation temperature ( T* = 34 K) and negative magnetization at low temperatures and low magnetic fields. Heat capacity measurements corroborate the presence of two components in the magnetic ordering and a noticeable third anomaly at low temperatures (similar to 15 K) which cannot be attributed the Schottky effect. The calculated magnetic entropy is substantially lower than that expected for the ground states of the ordered moments of Ru(5+) and Yb(3+), indicating the presence of large crystal field effects and/ or incomplete magnetic ordering and/ or magnetic frustrations well above the magnetic ordering. An attempt is made to explain the magnetization reversal within the frameworks of available models.|
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