A Model for Elastic Anomalies in K_2Pt (CN)_4Br_<0.3> ・ 3H_2O
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概要
- 論文の詳細を見る
A "sr>in-lattice" model is r>ror>osed for KzPt(CN):Bro.e-3Hz0 (KCP) tosolve the puzzling problem of the apparent complete softening of shear modulusC.. without any structural phase transition at low temperattu'es. Our modelemphasizes the importance of the site II water molecules lying between bromineions and Pt(CN). complexes. Each water molecule is assumed to have three con-figtu'ations, which are represented by an .S'=1 Ising spin. An almost completeagreement is obtained between calculation and experimental data. A marked"hardening" of C.. at low temperatures (7'<90 K) is predicted. A structural phasetransition is possible if the spin-lattice coupling can be enhanced by e.g. externalpressure. Ultrasonic attenuation coefficient (X.6, and also C.., a.., are calculated.
- 社団法人日本物理学会の論文
- 1979-11-15
著者
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Fukuyama Hidetoshi
The Institute For Solid State Physics The University Of Tokyo
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Nakajima S
Department Of Chemistry Graduate School Of Science Tohoku University
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Nakajima Sadao
The Institute For Solid State Physics The Unicersity Of Tokyo
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KURIHARA Susumu
The Institute for Solid State Physics,The University of Tokyo
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Kurihara Susumu
The Institute For Solid State Physics The University Of Tokyo
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Nakajima Sadao
Department of Chemistry,Graduate School of Science,Tohoku University
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