| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
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タイトル |
Phase separation in Y1-xCaxTiO3 associated with the insulator-to-metal transition : Observation by transmission electron microscopy |
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言語 |
en |
| 作成者 |
Matsuhata, Hirofumi
Iga, Fumitoshi
Tsubota, Masami
Nakano, Toshihiro
Takabatake, Toshiro
Kato, Kenichi
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| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
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権利情報 |
Copyright (c) 2005 American Physical Society. |
| 内容記述 |
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内容記述 |
Structural changes in Y1-xCaxTiO3 (x=0.37, 0.39 and 0.41) during a transition from an insulator-to-metal were investigated by transmission electron microscopy. In a specimen for x=0.39, on cooling a transition from orthorhombic to monoclinic lattice was observed first. The onset of this transition was not certain, but the monoclinic lattice was clearly observed at 170 K. On further cooling to 140 K, approximately the metalinsulator transition temperature, an introduction of strain to this monoclinic phase was observed. Below 140 K a state of phase separation, with growth of domains, was observed. In the insulator specimen for x=0.37 the transition from orthorhombic to monoclinic lattice was observed similarly to the case of x=0.39, but no phase separation was observed in the range from room temperature to 110 K. In the case for x=0.41, the phase separation was also observed on cooling, but transition temperature of the phase separation is lower than that reported by x-ray diffraction. The phase separation observed presently for 0.39 and 0.41 is considered to be a kind of electrical phase separation, which drives the appearance of the metallic state at low temperatures. This is the first report on observation of separated domains on the electrical phase separation associated with the metal-insulator transition in paramagnetic Y1-xCaxTiO3. |
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言語 |
en |
| 出版者 |
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出版者 |
American Physical Society |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版タイプ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
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識別子タイプ |
DOI |
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関連識別子 |
10.1103/PhysRevB.70.134109 |
| 関連情報 |
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識別子タイプ |
DOI |
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関連識別子 |
http://dx.doi.org/10.1103/PhysRevB.70.134109 |
| 収録物識別子 |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0163-1829 |
| 収録物識別子 |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA11187113 |
| 開始ページ |
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開始ページ |
134109-1 |
| 書誌情報 |
Physical Review B - Condensed Matter and Materials Physics
Physical Review B - Condensed Matter and Materials Physics
巻 70,
号 13,
p. 134109-1-134109-6,
発行日 2004-10-26
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| 旧ID |
18720 |
PhysRevB_70_134109.pdf (311.3 KB)
