| 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 |
|
|
タイトル |
Orbital-ordering-induced phase transition in LaVO3 and CeVO3 |
|
言語 |
en |
| 作成者 |
Ren, Y.
Nugroho, Agung A.
Menovsky, Alois A.
Strempfer, J.
Rütt, U.
Iga, Fumitoshi
Takabatake, Toshiro
Kimball, Clyde W.
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
|
|
権利情報 |
Copyright (c) 2003 American Physical Society. |
| 内容記述 |
|
|
内容記述 |
The structural phase transition in the orthovanadates LaVO3 and CeVO3 has been studied with high energy synchrotron x-ray diffraction. LaVO3 undergoes a second order phase transition at TN = 143 K and a first order transition at Tt = 141 K, while in CeVO3 there are phase transitions occurring at T0 = 154 K of second order and at TN = 134 K of first order. These phase transitions are confirmed by specific heat measurements. The phase transition at Tt in LaVO3 or T0 in CeVO3 is due to a G-type orbital ordering which lowers the structure symmetry from orthorhombic Pbnm to monoclinic P2t/b11. The structure change at TN in CeVO3 is ascribed to an orbital ordering enhanced magnetostrictive distortion, while that at TN in LaVO3 is most probably due to an ordered occupation of the vanadium 3d t2g orbitals associated with an antiferromagnetic ordering. We propose that the first order phase transition at Tt in LaVO3 should be associated with a sudden change of both spin and orbital configurations, similar to the phase transition at Ts = 77 K in YVO3 [Ren et al., Nature (London) 396, 441 (1998)], causing a reversal of the net magnetization. However, the ordered state above Tt in LaVO3 is identical to that below Ts in YVO3. It is found that, with increasing lanthanide ionic radius, the Néel temperature TN increases while the orbital ordering onset temperature decreases in these orthovanadates. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
American Physical Society |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1103/PhysRevB.67.014107 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
http://dx.doi.org/10.1103/PhysRevB.67.014107 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
0163-1829 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11187113 |
| 開始ページ |
|
|
開始ページ |
014107-1 |
| 書誌情報 |
Physical Review B - Condensed Matter and Materials Physics
Physical Review B - Condensed Matter and Materials Physics
巻 67,
号 1,
p. 014107-1-014107-6,
発行日 2003-01-24
|
| 旧ID |
18723 |
PhysRevB_67_014107.pdf (523.7 KB)
