ISSN:
1572-9605
Keywords:
CuGeO3
;
spin-Peierls transition
;
high-field magnetization
;
magnetic phase diagram
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Abstract We measured the static magnetization of polycrystalline CuGeO3, which exhibits the spineierls transition around 14.0 K in the absence of the magnetic field. The field dependence of the magnetization below 14.0 K shows a characteristic nonlinear process associated with a phase transition, and phase boundaries between the dimerized phases and other phases were obtained. The magnetic phase diagram qualitatively agrees with that of an organic spin-Peierls material. The phase transition is of first order below 10.0 K, and of second order above 10.0 K. Above 10.0 K, the critical field decreases from 13 to 0 T with increasing temperature. On the other hand, it is nearly independent of temperature below 10.0 K.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00724556
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