Abstract
Antiferromagnetic resonances for the bulk and thin film samples of europium telluride single crystal have been performed at the frequencies of 9.20 and 33.99 GHz. Angular dependences of resonance field in the cases of external field applied in and out-of the (111) plane are investigated. The easy and hard directions of the small anisotropy in the (111) plane are determined as and , respectively. Frequency diagram is obtained in symmetrical by scaling the modified field (1+κ 2 ) 1/2 · H 0 as an abscissa. Temperature dependences of resonance field are measured in temperatures above and below the Neel temperature, and the temperature dependence of anisotropy energy constants in the (111) plane is obtained. Its noticeable result is that the anisotropy energy constants in the (111) plane decrease with the decreasing temperature.
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