Raman scattering investigation of Y1-xCaxTiO3
Physical Review B - Condensed Matter and Materials Physics Volume 69 Issue 2
Page 024102-1-024102-8
published_at 2004-01-14
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| File | |
| Title ( eng ) |
Raman scattering investigation of Y1-xCaxTiO3
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| Creator |
Tsurui Takao
Tsubota Masami
Iga Fumitoshi
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| Source Title |
Physical Review B - Condensed Matter and Materials Physics
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| Volume | 69 |
| Issue | 2 |
| Start Page | 024102-1 |
| End Page | 024102-8 |
| 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.
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Physical Society
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| Date of Issued | 2004-01-14 |
| Rights |
Copyright (c) 2004 American Physical Society.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0163-1829
[DOI] 10.1103/PhysRevB.69.024102
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.69.024102
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