Electric field gradients in nanoparticles of HfAl and HfAl intermetallic compounds.

Autor:	Kulińska, Agnieszka, Wodniecki, Paweł
Předmět:	NANOPARTICLES ALUMINUM HAFNIUM INTERMETALLIC compounds ANGULAR correlations (Nuclear physics) ELECTRIC fields HYPERFINE interactions
Zdroj:	Hyperfine Interactions; 2010, Vol. 198 Issue 1-3, p47-54, 8p
Abstrakt:	Perturbed angular correlation (PAC) method was applied to study the electric field gradients in nanopowders of the HfAl and HfAl intermetallic compounds, obtained via mechanical alloying or after ball milling of the thermally alloyed compound. The influence of the ball milling procedure on the experimentally obtained hyperfine interaction parameters was determined. A strong dependence of the PAC pattern on the milling time was evidenced and attributed to the structural disorder. The thickness of the outer damaged part of the grains depends on the crystallographic structure of the milled material. In HfAl sample the influence of the milling procedure on the phase transformation was observed. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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