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ID 18721
file
creator
Tsurui, Takao
Tsubota, Masami
Iga, Fumitoshi
abstract
Raman scattering spectra of single crystalline Y12xCaxTiO3 (x=0, 0.10, 0.30, 0.37, 0.38, and 0.41) have been systematically studied in the temperature region from 298 to 8 K. The structural transition from the orthorhombic phase to the monoclinic one occurs below 200 K in x<0.38. The intensity increase, related to the metal-insulator transition, has been observed below 100 K in Y0.62Ca0.38TiO3 . The phase separation from the monoclinic phase to the metallic orthorhombic and insulating monoclinic phase occurs below the metalinsulator transition temperature (TMI) in Y0.62Ca0.38TiO3 . The intensity-increase is explained by the appearance of the orthorhombic structure below TMI and its anisotropic appearance is related to the random orientation of the principle axes of the orthorhombic grain.
journal title
Physical Review B - Condensed Matter and Materials Physics
volume
Volume 69
issue
Issue 2
start page
024102-1
end page
024102-8
date of issued
2004-01-14
publisher
American Physical Society
issn
0163-1829
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2004 American Physical Society.
relation url
department
Graduate School of Advanced Sciences of Matter