Journal
PHYSICA B
Volume 294, Issue -, Pages 75-78Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0921-4526(00)00612-8
Keywords
kagome lattice; Cu3V2O7(OH)(2)center dot 2H(2)O; high-field ESR; frustration
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As Cu2+ ions in Cu3V2O7(OH)(2). 2H(2)O form two-dimensional deformed kagome lattice structure in the ab plane, frustration is expected. To clarify the magnetic properties of this system, we performed X-band ESR measurement and high-field ESR measurements up to 16T. The ESR signal disappeared below 5 K in X-band ESR measurement and the ESR absorption line showed clear shift below 4.2K in our high-field ESR measurement at 80GHz. Although no long-range order is expected around 4K from the result of the specific heat measurement, our frequency-dependent measurement at 1.8 K showed the existence of the internal field in Cu3V2O7(OH)(2). 2H(2)O. The results of the temperature dependences of the resonance field and the linewidth are also presented and discussed in connection with other kagome substances. (C) 2001 Elsevier Science B.V. All rights reserved.
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