Magnetic resonance studies of the low-dimensional magnet NaFe(WO4)2

被引：9
作者：
Dergachev, KG [1 ]
Kobets, MI [1 ]
Khatsko, EN [1 ]
机构：
[1] Natl Acad Sci Ukraine, B Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkov, Ukraine
来源：
LOW TEMPERATURE PHYSICS | 2005年 / 31卷 / 05期
关键词：
D O I：
10.1063/1.1925387
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Magnetic resonance studies of the low-dimensional monoclinic compound NaFe(WO4)(2) are carried out in the frequency range 25-142 GHz and temperature range 1.8-300 K. The EPR data near the phase transition attest to the two-dimensionality of the magnetic structure of N,aFe(WO4)(2). The frequency-field relation of the AFMR spectrum shows that this compound is a biaxial antiferromagnet. The characteristic parameters of the AFMR energy spectrum are determined: the values of the energy gaps nu(1) = 141 GHz and nu(2) = 168.7 GHz, the anisotropy fields H-a1 = 10.5 kOe and H-a2 = 15 kOe, and the exchange field H-e = 121 kOe. The ratio of the intralayer to the interlayer exchange is estimated. Additional absorption is observed due to local modes caused by destruction of the translational order of the magnetic structure. (C) 2005 American Institute of Physics.
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页码：402 / 405
页数：4
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