Grain Size Effect on the Temperature Dependence of the Electric Field Gradient in Nanocrystalline In

Author: Li X.   Guan Z.   Agne T.   Wolf H.   Wichert T.  

Publisher: Springer Publishing Company

ISSN: 0304-3843

Source: Hyperfine Interactions, Vol.159, Iss.1-4, 2004-12, pp. : 63-69

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Abstract

Nanocrystalline indium (nano-In) was prepared with different particle sizes by electrochemical deposition. The temperature dependence of the local electric field gradient (EFG) of nano-In was investigated in a temperature range of 20–300 K using the probe 111In for perturbed γγ angular correlation (PAC) experiments. The temperature dependence of the EFG of nano-In can be described by a (1−BT 3/2) dependence as in bulk-In. It is shown that the low temperature value of the EFG and the proportionality constant B vary systematically with particle size.