Comparison among the local atomic order of amorphous TM–Ti alloys (TM = Co, Ni, Cu) produced by mechanical alloying studied by EXAFS
Departamento de Física, Universidade Federal de Santa Catarina, 88040-900
Florianópolis SC, Brazil
Corresponding author: a email@example.com
Published online: 9 April 2004
We have investigated the local atomic structure of amorphous TM–Ti alloys (TM = Co, Ni, Cu) produced by Mechanical Alloying by means of EXAFS analyses on TM and Ti K-edges. Coordination numbers and interatomic distances for the three alloys where found and compared. EXAFS results obtained indicated a shortening in the unlike pairs TM–Ti as the difference between d electrons of TM and Ti atoms increases, suggesting an increase in the chemical short range order (CSRO) from TM = Co to Cu.
PACS: 61.43.Dq – Amorphous semiconductors, metals, and alloys / 61.10.Ht – X-ray absorption spectroscopy: EXAFS, NEXAFS, XANES, etc. / 81.20.Ev – Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2004