Magnetic Properties and Optical and Paramagnetic Spectra of Divalent Nickel in Sr_2(NiW)O_6

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概要

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• Small single crystals of ordered perovskite Sr_2(NiW)0_6 were synthesized by the flux method using SrCl_26H_20. The crystaL becomes aatiferromagnetic below 59°K and undergoes a tetragonal-cubic transition at 523°K. Optical and paramagnetic spectra of divalent nickel in Sr_2(NiW)0_6 were investigated. The optical absorption lines are interpreted as transitions between the singlet ground state and possible Stark levels, following the scheme given by Low for MgO:Ni. Parameters of the energy levels were determined as follows: 10Dg=8575cm^<-1>, E_p=13430cm^<-1>, E_p=10860cm^<-1> and E_G=17120cm^<-1>. Paramagnetic resonance occurred at the field strength of 7562 0e and the frequency of 23.73GC/sec. Values of g and spin-orbit coupling constant λ were evaluated at 2.242 and -256cm^<-1> respectively.

• 社団法人日本物理学会の論文
• 1966-09-05

著者

• Nakagawa Takehiko

  Physics Department Tokyo Institute Of Technology

• Nomura Shoichiro

  Physics Department Tokyo Institute Of Technology

• Nomura S.

  Physics Department, Tokyo Institute of Technology

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