Anisotropic Uniaxial Pressure Response in UCoAl Studied by Nuclear Magnetic Resonance Measurement
Kosuke Karube, Shunsaku Kitagawa, Taisuke Hattori, Kenji Ishida, Noriaki Kimura, Takemi Komatsubara
2014
Journal of the Physical Society of Japan
We have performed nuclear quadrupole resonance and nuclear magnetic resonance measurements on UCoAl with strong Ising-type anisotropy under b- and c-axes uniaxial pressure. In the b-axis uniaxial pressure (P_∥ b) measurement, we observed an increase in the metamagnetic transition field with increasing P_∥ b. In the c-axis uniaxial pressure (P_∥ c) measurement, on the other hand, we observed a ferromagnetic transition in zero magnetic field along the c-axis above P_∥ c = 0.08 GPa. The anomaly of
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... the nuclear spin-lattice relaxation rate divided by the temperature [ (T_1 T)^-1] at T = 20 K is suppressed by P_∥ b and slightly enhanced by P_∥ c. The anisotropic uniaxial pressure response indicates that uniaxial pressure is a good parameter for tuning the Ising magnetism in UCoAl.
doi:10.7566/jpsj.83.084706
fatcat:jfl2j4f4urfltmbtq7bdi7bi7u