Structural phase transitions and the effect on Pr anomalous ordering for the PrBa2-xLaxCu3O7+y system

H. C. Ku; H. M. Luo; Y. P. Chi; B. N. Lin; Y. Y. Hsu; C. H. Lin; H. C.I. Kao

doi:10.1016/S0921-4526(99)00784-X

Structural phase transitions and the effect on Pr anomalous ordering for the PrBa_2-xLa_xCu₃O_7+y system

H. C. Ku^*
, H. M. Luo
, Y. P. Chi
, B. N. Lin
, Y. Y. Hsu
, C. H. Lin
, H. C.I. Kao

^*此作品的通信作者

研究成果: 雜誌貢獻 › 會議論文 › 同行評審

2 引文斯高帕斯（Scopus）

摘要

Complex crystal symmetry variation is observed for the oxygenated PrBa_2-xLa_xCu₃O_7+y system (0≤x≤1, -0.12≤y≤0.39). Powder X-ray Rietveld analysis indicates that the crystal structure changes from the PrBa₂Cu₃O₇ or CuBa₂PrCu₂O₇ 1212C-type (C for chain) orthorhombic O(I)-phase (space group Pmmm) to 1212-type tetragonal T-phase (P4/mmm) around x = 0.45, and then to a new 1212-type of orthorhombic O(II)-phase (Cmmm) around x = 0.65. However, regardless of the structural change, anomalous Pr ordering temperature T_N(Pr) decreases monotonically from 18 K for PrBa₂Cu₃O_6.88 to 2.8 K for PrBa_1.3La_0.7Cu₃O_7.24. The increasing Pr-O bond length with decreasing T_N indicates that Pr ordering is closely correlated with the wave function overlap between Pr-4f orbital and O-2p_π orbital in the CuO₂ bi-layers.

原文	英語
頁（從 - 到）	892-893
頁數	2
期刊	Physica B: Condensed Matter
卷	281-282
DOIs	https://doi.org/10.1016/S0921-4526(99)00784-X
出版狀態	已發佈 - 2000 6月 1
對外發佈	是
事件	Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) - Nagano, Jpn 持續時間: 1999 8月 24 → 1999 8月 28

ASJC Scopus subject areas

電子、光磁材料
凝聚態物理學
電氣與電子工程

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10.1016/S0921-4526(99)00784-X

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引用此

@article{f9bf287c03714312b2ce17cfde260b95,

title = "Structural phase transitions and the effect on Pr anomalous ordering for the PrBa2-xLaxCu3O7+y system",

abstract = "Complex crystal symmetry variation is observed for the oxygenated PrBa2-xLaxCu3O7+y system (0≤x≤1, -0.12≤y≤0.39). Powder X-ray Rietveld analysis indicates that the crystal structure changes from the PrBa2Cu3O7 or CuBa2PrCu2O7 1212C-type (C for chain) orthorhombic O(I)-phase (space group Pmmm) to 1212-type tetragonal T-phase (P4/mmm) around x = 0.45, and then to a new 1212-type of orthorhombic O(II)-phase (Cmmm) around x = 0.65. However, regardless of the structural change, anomalous Pr ordering temperature TN(Pr) decreases monotonically from 18 K for PrBa2Cu3O6.88 to 2.8 K for PrBa1.3La0.7Cu3O7.24. The increasing Pr-O bond length with decreasing TN indicates that Pr ordering is closely correlated with the wave function overlap between Pr-4f orbital and O-2pπ orbital in the CuO2 bi-layers.",

author = "Ku, \{H. C.\} and Luo, \{H. M.\} and Chi, \{Y. P.\} and Lin, \{B. N.\} and Hsu, \{Y. Y.\} and Lin, \{C. H.\} and Kao, \{H. C.I.\}",

note = "Funding Information: The research is supported by NSC88-2112-M007-003 and -033.; Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) ; Conference date: 24-08-1999 Through 28-08-1999",

year = "2000",

month = jun,

day = "1",

doi = "10.1016/S0921-4526(99)00784-X",

language = "English",

volume = "281-282",

pages = "892--893",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Structural phase transitions and the effect on Pr anomalous ordering for the PrBa2-xLaxCu3O7+y system

AU - Ku, H. C.

AU - Luo, H. M.

AU - Chi, Y. P.

AU - Lin, B. N.

AU - Hsu, Y. Y.

AU - Lin, C. H.

AU - Kao, H. C.I.

N1 - Funding Information: The research is supported by NSC88-2112-M007-003 and -033.

PY - 2000/6/1

Y1 - 2000/6/1

N2 - Complex crystal symmetry variation is observed for the oxygenated PrBa2-xLaxCu3O7+y system (0≤x≤1, -0.12≤y≤0.39). Powder X-ray Rietveld analysis indicates that the crystal structure changes from the PrBa2Cu3O7 or CuBa2PrCu2O7 1212C-type (C for chain) orthorhombic O(I)-phase (space group Pmmm) to 1212-type tetragonal T-phase (P4/mmm) around x = 0.45, and then to a new 1212-type of orthorhombic O(II)-phase (Cmmm) around x = 0.65. However, regardless of the structural change, anomalous Pr ordering temperature TN(Pr) decreases monotonically from 18 K for PrBa2Cu3O6.88 to 2.8 K for PrBa1.3La0.7Cu3O7.24. The increasing Pr-O bond length with decreasing TN indicates that Pr ordering is closely correlated with the wave function overlap between Pr-4f orbital and O-2pπ orbital in the CuO2 bi-layers.

AB - Complex crystal symmetry variation is observed for the oxygenated PrBa2-xLaxCu3O7+y system (0≤x≤1, -0.12≤y≤0.39). Powder X-ray Rietveld analysis indicates that the crystal structure changes from the PrBa2Cu3O7 or CuBa2PrCu2O7 1212C-type (C for chain) orthorhombic O(I)-phase (space group Pmmm) to 1212-type tetragonal T-phase (P4/mmm) around x = 0.45, and then to a new 1212-type of orthorhombic O(II)-phase (Cmmm) around x = 0.65. However, regardless of the structural change, anomalous Pr ordering temperature TN(Pr) decreases monotonically from 18 K for PrBa2Cu3O6.88 to 2.8 K for PrBa1.3La0.7Cu3O7.24. The increasing Pr-O bond length with decreasing TN indicates that Pr ordering is closely correlated with the wave function overlap between Pr-4f orbital and O-2pπ orbital in the CuO2 bi-layers.

UR - https://www.scopus.com/pages/publications/0033876291

UR - https://www.scopus.com/pages/publications/0033876291#tab=citedBy

U2 - 10.1016/S0921-4526(99)00784-X

DO - 10.1016/S0921-4526(99)00784-X

M3 - Conference article

AN - SCOPUS:0033876291

SN - 0921-4526

VL - 281-282

SP - 892

EP - 893

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

T2 - Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99)

Y2 - 24 August 1999 through 28 August 1999

ER -

Structural phase transitions and the effect on Pr anomalous ordering for the PrBa2-xLaxCu3O7+y system

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Structural phase transitions and the effect on Pr anomalous ordering for the PrBa_2-xLa_xCu₃O_7+y system