Systematic variation of TN(Pr) for the two-CuO2-layer cuprate m212 (m=1, 2, 3) systems

H. C. Ku; C. L. Yang; C. H. Chou; Y. Y. Hsu; Y. B. You; J. H. Shieh

doi:10.1063/1.362153

Systematic variation of T_N(Pr) for the two-CuO₂-layer cuprate m212 (m=1, 2, 3) systems

H. C. Ku^*, C. L. Yang, C. H. Chou, Y. Y. Hsu, Y. B. You, J. H. Shieh

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

The systematic variation of anomalous Pr antiferromagnetic ordering temperature T_N(Pr) for the two-CuO₂-layer cuprate system MA₂PrCu₂O_y (M=Cu, Hg, Tl, Pb; A=Ba, Sr) was verified through the observation of a new Hg-1212 HgSr₂PrCu₂O_6+δ tetragonal compound with a T_N(Pr) of 6 K and a Pr-O bond length of 2.492 Å between Pr and oxygen in the adjacent CuO₂ layers. For the tetragonal/orthorhombic 1212 compounds including the PrBa₂Cu₃O_7-y system, T_N(Pr) was found to decrease monotonically with increasing Pr-O distance. The importance of Pr-O-Pr superexchange magnetic coupling is expected for all two-CuO₂-layer M_mA₂PrCu₂O_y w212-type (m=1, 2, 3) compounds. A similar Pr anomaly in the 2212-type system was first observed on the new tetragonal (Pb_0.5Cu_0.5)₂(Ba_0.5Sr _0.5)2PrCu₂O₈ compound with a high T_N(Pr) of 9 K.

Original language	English
Pages (from-to)	5866-5868
Number of pages	3
Journal	Journal of Applied Physics
Volume	79
Issue number	8 PART 2B
DOIs	https://doi.org/10.1063/1.362153
Publication status	Published - 1996 Apr 15
Externally published	Yes

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General Physics and Astronomy

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@article{a12ab3adf4ab450e98d43109afff21db,

title = "Systematic variation of TN(Pr) for the two-CuO2-layer cuprate m212 (m=1, 2, 3) systems",

abstract = "The systematic variation of anomalous Pr antiferromagnetic ordering temperature TN(Pr) for the two-CuO2-layer cuprate system MA2PrCu2Oy (M=Cu, Hg, Tl, Pb; A=Ba, Sr) was verified through the observation of a new Hg-1212 HgSr2PrCu2O6+δ tetragonal compound with a TN(Pr) of 6 K and a Pr-O bond length of 2.492 {\AA} between Pr and oxygen in the adjacent CuO2 layers. For the tetragonal/orthorhombic 1212 compounds including the PrBa2Cu3O7-y system, TN(Pr) was found to decrease monotonically with increasing Pr-O distance. The importance of Pr-O-Pr superexchange magnetic coupling is expected for all two-CuO2-layer MmA2PrCu2Oy w212-type (m=1, 2, 3) compounds. A similar Pr anomaly in the 2212-type system was first observed on the new tetragonal (Pb0.5Cu0.5)2(Ba0.5Sr 0.5)2PrCu2O8 compound with a high TN(Pr) of 9 K.",

author = "Ku, {H. C.} and Yang, {C. L.} and Chou, {C. H.} and Hsu, {Y. Y.} and You, {Y. B.} and Shieh, {J. H.}",

year = "1996",

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doi = "10.1063/1.362153",

language = "English",

volume = "79",

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AU - Ku, H. C.

AU - Yang, C. L.

AU - Chou, C. H.

AU - Hsu, Y. Y.

AU - You, Y. B.

AU - Shieh, J. H.

PY - 1996/4/15

Y1 - 1996/4/15

N2 - The systematic variation of anomalous Pr antiferromagnetic ordering temperature TN(Pr) for the two-CuO2-layer cuprate system MA2PrCu2Oy (M=Cu, Hg, Tl, Pb; A=Ba, Sr) was verified through the observation of a new Hg-1212 HgSr2PrCu2O6+δ tetragonal compound with a TN(Pr) of 6 K and a Pr-O bond length of 2.492 Å between Pr and oxygen in the adjacent CuO2 layers. For the tetragonal/orthorhombic 1212 compounds including the PrBa2Cu3O7-y system, TN(Pr) was found to decrease monotonically with increasing Pr-O distance. The importance of Pr-O-Pr superexchange magnetic coupling is expected for all two-CuO2-layer MmA2PrCu2Oy w212-type (m=1, 2, 3) compounds. A similar Pr anomaly in the 2212-type system was first observed on the new tetragonal (Pb0.5Cu0.5)2(Ba0.5Sr 0.5)2PrCu2O8 compound with a high TN(Pr) of 9 K.

AB - The systematic variation of anomalous Pr antiferromagnetic ordering temperature TN(Pr) for the two-CuO2-layer cuprate system MA2PrCu2Oy (M=Cu, Hg, Tl, Pb; A=Ba, Sr) was verified through the observation of a new Hg-1212 HgSr2PrCu2O6+δ tetragonal compound with a TN(Pr) of 6 K and a Pr-O bond length of 2.492 Å between Pr and oxygen in the adjacent CuO2 layers. For the tetragonal/orthorhombic 1212 compounds including the PrBa2Cu3O7-y system, TN(Pr) was found to decrease monotonically with increasing Pr-O distance. The importance of Pr-O-Pr superexchange magnetic coupling is expected for all two-CuO2-layer MmA2PrCu2Oy w212-type (m=1, 2, 3) compounds. A similar Pr anomaly in the 2212-type system was first observed on the new tetragonal (Pb0.5Cu0.5)2(Ba0.5Sr 0.5)2PrCu2O8 compound with a high TN(Pr) of 9 K.

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Systematic variation of T_N(Pr) for the two-CuO₂-layer cuprate m212 (m=1, 2, 3) systems

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