Mercury chalcogenide (Hg0.865Mn0.135Te) monocrystal was grown by crystallization from a two-phase mixture with replenishment of the melt from a tellurium solution and has n-type conductivity. The electron spin resonance (ESR) spectra of a single crystal were studied before and after X-irradiation. Only one intense anisotropic ESR line was observed at 4.2 K before X-irradiation. The anisotropy parameters were established from the angular dependence of the resonance field of the ESR line. After X-irradiation, three ESR lines were registered in the spectrum. The first and second lines with a large g-factor and unusual temperature dependencies were associated with charge carriers localized on defects with the strong exchange interaction with the manganese ion spins. The third ESR narrowed line was identified as signal from Mn2+ ions. Estimated anisotropic exchange parameters from angular dependencies of magnetic resonance field depend on temperature. The temperature dependencies of ESR linewidths are well described by the Korringa law and spin-lattice relaxation contributions. The discontinuities in temperature dependencies of resonance field and linewidth at 18 and 65 K were observed.

中文翻译：

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电子自旋共振法研究Hg0.865Mn0.135Te磁性能


汞硫属化物 (Hg0.865Mn0.135Te) 单晶是通过从两相混合物中结晶并从碲溶液中补充熔体来生长的，具有 n 型导电性。研究了 X 辐射前后单晶的电子自旋共振 (ESR) 谱。在 X 射线照射之前，在 4.2 K 处仅观察到一条强各向异性 ESR 线。各向异性参数是根据 ESR 线共振场的角度依赖性建立的。 X 辐射后，光谱中记录了 3 条 ESR 线。具有大 g 因子和不寻常的温度依赖性的第一条和第二条线与位于缺陷上的电荷载流子相关，并与锰离子自旋发生强交换相互作用。第三条 ESR 窄线被识别为来自 Mn2+ 离子的信号。根据磁共振场的角度依赖性估计的各向异性交换参数取决于温度。 Korringa 定律和自旋晶格弛豫贡献很好地描述了 ESR 线宽的温度依赖性。观察到 18 和 65 K 时共振场和线宽的温度依赖性的不连续性。