Second-Order Effect of Strain in Singlet Ground State Compound PrNi_5(Condensed Matter: Structure, Mechanical and Thermal Properties)

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概要

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• The rare earth compound PrNi_5 has a nonmagnetic singlet ground state. The ground state of PrNi_5 crosses the first excited state when a magnetic field is applicated along the α-axis. This level crossing occurs at 20T and causes anomalies in some substances. In particular, the elastic constant C_<66> exhibits a large elastic softening at this level crossing point. The purpose of this paper is to analyze the behavior of C_<66> when a magnetic field is applied to a system. The behavior of the temperature dependence of C_<66> has been explained already. However the method of calculating the temperature dependence of C_<66> cannot explain the field dependence of C_<66>. Hence the elastic softening and behavior above the level crossing point in C_<66> are analyzed applying the higher order effect of strain to elastic constants. The higher order effect of strain is much smaller than the first-order effect of strains and is usually neglected. Not only a first-order strain but a second-order one is taken into account in our works.

• 社団法人日本物理学会の論文
• 2005-07-15

著者

• TAMAKI Akira

  Department of Physiology, Hyogo College of Medicine

• Tamaki Akira

  Department Of Applied Science Tokyo Denki University

• Tamaki A

  Department Of Materials Science And Engineering Graduate School Of Engineering Tokyo Denki Universit

• UDAGAWA Tomoo

  Department of Materials Science and Engineering, Graduate School of Engineering, Tokyo Denki Univers

• HASHIO Susumu

  Department of Materials Science and Engineering, Graduate School of Engineering, Tokyo Denki Univers

• MORITA Kengo

  Department of Environmental Materials Science, Faculty of Engineering, Tokyo Denki University

• Udagawa Tomoo

  Department Of Materials Science And Engineering Graduate School Of Engineering Tokyo Denki Universit

• Hashio Susumu

  Department Of Materials Science And Engineering Graduate School Of Engineering Tokyo Denki Universit

• Morita Kengo

  Department Of Environmental Materials Science Faculty Of Engineering Tokyo Denki University

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