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Thermodynamic, transport and magnetic properties of α′-NaV2O5
被引:4
作者:
Lohmann, M
[1
]
Hemberger, J
[1
]
Nicklas, M
[1
]
Loidl, A
[1
]
Klemm, M
[1
]
Obermeier, G
[1
]
Horn, S
[1
]
机构:
[1] Univ Augsburg, D-86135 Augsburg, Germany
关键词:
spin-Peierls transition;
transport properties;
electron spin resonance;
D O I:
10.1016/S0921-4526(98)00843-6
中图分类号:
O469 [凝聚态物理学];
学科分类号:
070205 ;
摘要:
We report on heat capacity, electrical resistance and electron spin resonance experiments on alpha'-NaV2O5. At the phase transition temperature, the specific heat anomaly which can hardly be described within the framework of a spin-Peierls transition and a large anomaly in the electrical resistance reveal that the lattice degrees of freedom are strongly involved. ESR results were obtained from 4 to 700 K. The spin susceptibility at high temperatures closely follows a Bonner-Fisher behaviour, with an exchange constant of J = 578 K, but differs significantly from this theory at lower temperatures. (C) 1999 Elsevier Science B.V. All rights reserved.
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页码:983 / 984
页数:2
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