A MN K-EXAFS STUDY OF Y0.5CA0.5MNO3

Authors
GOPALAN RS KULKARNI GU
Citation
Rs. Gopalan et Gu. Kulkarni, A MN K-EXAFS STUDY OF Y0.5CA0.5MNO3, Solid state communications, 105(6), 1998, pp. 371-375
Citations number
14
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
105
Issue
6
Year of publication
1998
Pages
371 - 375
Database
ISI
SICI code
0038-1098(1998)105:6<371:AMKSOY>2.0.ZU;2-X
Abstract
Mn K-EXAFS measurements of Y0.5Ca0.5MnO3 from 300 K to 120 K show a la rge static disorder around 160 K, besides significant distortion of th e MnO6 octahedron. The average Debye-Waller factor for the Mn-O octahe dral coordination is 0.0025 Angstrom(2) in the 160 K region while it i s somewhat lower (0.001 Angstrom(2)) above and below 160 K. These obse rvations are discussed in the light of the structural data as well as the electrical and magnetic properties of this solid. (C) 1998 Elsevie r Science Ltd.