TY - JOUR
T1 - Structural evolution and magnetic properties of nano-granular metallic alloys
AU - Sumiyama, K.
AU - Suzuki, K.
AU - Makhlouf, S. A.
AU - Wakoh, K.
AU - Kamiyama, T.
AU - Yamamuro, S.
AU - Konno, T. J.
AU - Xu, Y. F.
AU - Sakurai, M.
AU - Hihara, T.
N1 - Funding Information:
The authors are indebted to the High Field Laboratory for Superconducting Materials in Tohoku University for the MR measurements. This work was also supported by the New Frontier Program Grant-in-Aid for Scientific Research (no. 05NP0501) awarded by the Ministry of Education, Science and Culture of Japan.
PY - 1995
Y1 - 1995
N2 - Fe clusters have been dispersed in Ag matrices using cluster beam (CB) sources without any heat treatment. Their structure and morphology have been studied by comparison with those of the sputter-deposited FeAg alloys using small angle X-ray scattering, high resolution transmission electron microscopy and extended X-ray absorption fine structure measurements. In the granular alloys made by CB, bcc Fe clusters of a few nanometers dimension are detected, together with ten-nanometer scale geometrical and chemical fluctuations. In the sputter-deposited alloys, the Fe atoms are rather well mixed with the Ag atoms in the as-deposited state, and fcc Fe clusters are first formed and transform to larger bcc particles with increasing annealing temperature. The field-dependence of the magnetoresistance is well correlated with the growth mode of the Fe clusters in the granular alloys.
AB - Fe clusters have been dispersed in Ag matrices using cluster beam (CB) sources without any heat treatment. Their structure and morphology have been studied by comparison with those of the sputter-deposited FeAg alloys using small angle X-ray scattering, high resolution transmission electron microscopy and extended X-ray absorption fine structure measurements. In the granular alloys made by CB, bcc Fe clusters of a few nanometers dimension are detected, together with ten-nanometer scale geometrical and chemical fluctuations. In the sputter-deposited alloys, the Fe atoms are rather well mixed with the Ag atoms in the as-deposited state, and fcc Fe clusters are first formed and transform to larger bcc particles with increasing annealing temperature. The field-dependence of the magnetoresistance is well correlated with the growth mode of the Fe clusters in the granular alloys.
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U2 - 10.1016/0022-3093(95)00403-3
DO - 10.1016/0022-3093(95)00403-3
M3 - Article
AN - SCOPUS:42549139306
SN - 0022-3093
VL - 192-193
SP - 539
EP - 545
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
ER -