J. Phys. Soc. Jpn. 44, pp. 1804-1808 (1978) [5 Pages]
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Received January 9, 1978
Magnetization process is precisely measured on a single crystal of CuCl 2 2H 2 O at 1.1 K using a pulsed magnetic field up to 180 kOe. Transitions from the antiferromagnetic to the paramagnetic states are observed at 150±2, 161±2 and 146±2 kOe when external fields are applied parallel to the a , b and c -axes, respectively. From these results, an antiferromagnetic exchange interaction along the c -axis is determined as J =3.83±0.05 cm -2 . It is also shown from a nonlinear magnetization curve that the zero-field spin reduction due to zero-point motion is 28.4±0.4%.
©1978 The Physical Society of Japan
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