Temperature dependence of the electric field gradient in noncubic metals
Temperature dependence of the electric field gradient in noncubic metals
复制标题
非立方金属中电场梯度的温度依赖性
DOI：
10.1007/bf01312998
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发表时间：
1976
期刊：
影响因子：
--
通讯作者：
W. Witthuhn
中科院分区：
文献类型：
--
作者：
J. Christiansen;P. Heubes;R. Keitel;W. Klinger;W. Loeffler;W. Sandner;W. Witthuhn
用TDPAC和TDPAD方法高精度地测量了~（111）Cd在Cd、In、Sn中的四极超精细相互作用和~（67）Zn、~（69）Ge在Zn中的四极超精细相互作用，并研究了~（117）In在Cd、In中的四极超精细相互作用和~（113）Sn在Cd中的四极超精细相互作用。在从几K到熔点的温度范围内，电场梯度q（T）的温度依赖性可以用简单的关系式eq（T）/eq（0）=1-B T 3/2来再现。通过与其他实验的比较，验证了该经验关系式的普适性。特别是，高精度的NQR实验的Ga，In和Sb强烈支持这种关系。它讨论了晶格振动是否可以解释所观察到的温度变化或实验数据是否表明需要一个新的描述。提出了一些新的想法，提出了一个基本不同的模型。
The quadrupole hyperfine interaction of111Cd in Cd, In, Sn, and of67Zn,69Ge in Zn was measured with high accuracy using TDPAC and TDPAD methods; in addition the systems117In in Cd and In, and113Sn in Cd were investigated. The temperature dependence of the electric field gradienteq(T) can be reproduced by the simple relationeq(T)/eq(0)=1—B⋅T3/2over a range of temperatures from a few K up to the melting point. A comparison with other experiments was carried out to test the universality of this empirical relation. In particular, high precision NQR experiments on Ga, In and Sb strongly support this relation. It is discussed whether lattice vibrations can explain the observed temperature variation or whether the experimental data indicate the need for a new description. Some new ideas suggesting a basically different model are given.