Specific heat and anisotropic magnetic susceptibility of Pr2CuO4, Nd2CuO4 and Sm2CuO4 crystals (original) (raw)
1989, Physica C: Superconductivity
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Magnetoelastic interactions in RE2CuO4 system
Solid State Communications, 1994
We present thermal expansion data for R2CuO 4 (R = Pr, Nd, Sm, Gd, Eu) compounds and specific heat measurements of Sm and Eu compounds in the temperature range from liquid helium to room temperature. In the case of Pr, Nd, Gd, and Eu compounds the coefficient of thermal expansion (a) increases monotonously with rising temperature whereas a of the Sm compound shows a pronounced minimum at about 60 K. These findings are interpreted in terms of the crystal field induced electric quadrupole moment of the 4f electrons.
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