Relation between the Superconducting Transition Temperature and the Axial Ratio in R Ni 2 B 2 C ( R =Y,Ho, Er,Tm, Lu) Under High Pressure |
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| Authors: | G. Oomi I. Minamitake M. Ohashi T. Eto B.K. Cho P.C. Canfield |
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| Affiliation: | 1. Department of Physics , Kyushu University , Ropponmatsu, Chuo-ku, Fukuoka , 810-8560 , Japan;2. Research Center for Higher Education , Kyushu University , Ropponmatsu, Chuo-ku, Fukuoka , 810-8560 , Japan;3. Ames Laboratory , Iowa State University , Iowa , NM , 50011 , USA;4. Department of Materials Science &5. Engineering , K-JIST , 500-712 , Sourth Korea;6. Ames Laboratory , Iowa State University , Iowa , NM , 50011 , USA |
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| Abstract: | ![]()
The effect of pressure on the lattice parameters of R Ni 2 B 2 C ( R = Y, Ho, Er, Tm, Lu) has been measured in order to investigate the relation of T C to axial ratio c/a in the tetragonal lattice or the cohesive properties of these materials. The large anisotropies are observed in the lattice compression curves especially for R =Ho and Tm; the c -axis is more compressible than the a -axis. On the other hand, the anisotropy in the lattice compression is found to be relatively small for R =Y and Lu. The close relation between T C and c/a is pointed out particularly for R =Ho. |
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| Keywords: | Rni 2 B 2 C Lattice Parameter Superconductivity Axial Ratio High Pressure |
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