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Vol.43.No.1(65) >

 
Title :一軸方向に歪んだパイロクロア型磁性体の基底状態―第二近接相互作用の効果―
Authors :加藤 友彦
古賀 陽介
北﨑 保
Issue Date :30-Sep-2010
Abstract :Ground states of Co􀀂Cl(OH)􀀃are investigated. This compound is a magnet with pyrochlore structure distorted in one axis direction. The magnetic structure at low temperature is coexistence of ferromagnetism and random spin, which was reported by experiments. However,the detailed mechanism and the interaction of the magnetic structure are not clarified. Then,we assumed an anisotropic Ising model,and examined the ground state by multicanonical Monte Carlo simulation. As the result,there are overwhelmingly many spin glass states,and main ground states are spin glass aspects. At the same time, there are only a few ferromagnetic states. The latter magnetic states are ferromagnetic at triangular layers and 2in 1out random state at Kagome layers. It is expected that the states correspond to the states reported by the experiments and are stabilized if weak ferromagnetic interactions exist between second nearest neighbor spins. This expectation is confirmed by the simulat
Type Local :紀要論文
ISSN :02876620
Publisher :福岡工業大学
URI :http://hdl.handle.net/11478/1085
citation :福岡工業大学研究論集
AN10036974
43
1
5
9
Citation :福岡工業大学研究論集 Vol.43 no.1 p.5 -9
Appears in Collections:Vol.43.No.1(65)

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