Mechanisms of EPR line broadening in Pb5Ge3O11 near a structural transition |
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| Authors: | V. A. Vazhenin E. L. Rumyantsev M. Yu. Artemov K. M. Starichenko |
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| Affiliation: | (1) Scientific-Research Institute for Physics and Applied Mathematics, Ural State University, 620083 Ekaterinburg, Russia |
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| Abstract: | The polar angular dependence of the anomalous linewidth of three EPR transitions in the Gd3+ trigonal center has been used to determine the broadening mechanism. It is shown that the dominant mechanism of Gd3+ EPR signal broadening in the vicinity of the ferroelectric transition is the critically growing spread of the b 21 and c 21 parameters accounting for the odd-order fields of remote charge-compensating defects. Fiz. Tverd. Tela (St. Petersburg) 40, 321–326 (February 1998) |
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