Evidence for new phases in Ln-doped La1.875Ba0.125CuO4 (Ln=Nd, Sm)

N. Hara; T. Kamiyama; I. Kamata; I. Nakahara; H. Hayakawa; E. Akiba; H. Asano

doi:10.1016/0038-1098(92)90731-N

Evidence for new phases in Ln-doped La_1.875Ba_0.125CuO₄ (Ln=Nd, Sm)

N. Hara, T. Kamiyama, I. Kamata, I. Nakahara, H. Hayakawa, E. Akiba, H. Asano

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

6 Citations (Scopus)

Abstract

The structure and superconductivity of La_1.875-xNd_xBa_0.125CuO₄ (0≤x≤0.20) and La_1.875-xSm_xBa_0.125CuO₄ (0≤x≤0.10) have been studied by X-ray diffraction and magnetic susceptibility over a temperature range down to 10 K. Superconductivity does not recover by Nd doping up to x=0.20 and Sm doping up to x=0.10. X-ray diffraction revealed that new structural transitions appear at low temperature. La_1.835Nd_0.04Ba_0.125CuO₄ undergoes the discontinuous orthorhombic (MTO) - > tetragonal (LTT1) transition at about 65 K, the LTT1 - > orthorhombic (LTO) transition at about 50 K, and then the continuous LTO - > tetragonal (LTT2) transition at about 30 K. In the case of La_1.875-xNd_xBa_0.125CuO₄ (0.06≤x≤0.20) and La_1.875-xSm_xBa_0.125CuO₄ (0<x≤0.10), the lowest-temperature phase is LTO.

Original language	English
Pages (from-to)	975-978
Number of pages	4
Journal	Solid State Communications
Volume	82
Issue number	12
DOIs	https://doi.org/10.1016/0038-1098(92)90731-N
Publication status	Published - Jan 1 1992
Externally published	Yes

All Science Journal Classification (ASJC) codes

Chemistry(all)
Condensed Matter Physics
Materials Chemistry

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10.1016/0038-1098(92)90731-N

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title = "Evidence for new phases in Ln-doped La1.875Ba0.125CuO4 (Ln=Nd, Sm)",

abstract = "The structure and superconductivity of La1.875-xNdxBa0.125CuO4 (0≤x≤0.20) and La1.875-xSmxBa0.125CuO4 (0≤x≤0.10) have been studied by X-ray diffraction and magnetic susceptibility over a temperature range down to 10 K. Superconductivity does not recover by Nd doping up to x=0.20 and Sm doping up to x=0.10. X-ray diffraction revealed that new structural transitions appear at low temperature. La1.835Nd0.04Ba0.125CuO4 undergoes the discontinuous orthorhombic (MTO) - > tetragonal (LTT1) transition at about 65 K, the LTT1 - > orthorhombic (LTO) transition at about 50 K, and then the continuous LTO - > tetragonal (LTT2) transition at about 30 K. In the case of La1.875-xNdxBa0.125CuO4 (0.06≤x≤0.20) and La1.875-xSmxBa0.125CuO4 (0",

author = "N. Hara and T. Kamiyama and I. Kamata and I. Nakahara and H. Hayakawa and E. Akiba and H. Asano",

year = "1992",

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language = "English",

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T1 - Evidence for new phases in Ln-doped La1.875Ba0.125CuO4 (Ln=Nd, Sm)

AU - Hara, N.

AU - Kamiyama, T.

AU - Kamata, I.

AU - Nakahara, I.

AU - Hayakawa, H.

AU - Akiba, E.

AU - Asano, H.

PY - 1992/1/1

Y1 - 1992/1/1

N2 - The structure and superconductivity of La1.875-xNdxBa0.125CuO4 (0≤x≤0.20) and La1.875-xSmxBa0.125CuO4 (0≤x≤0.10) have been studied by X-ray diffraction and magnetic susceptibility over a temperature range down to 10 K. Superconductivity does not recover by Nd doping up to x=0.20 and Sm doping up to x=0.10. X-ray diffraction revealed that new structural transitions appear at low temperature. La1.835Nd0.04Ba0.125CuO4 undergoes the discontinuous orthorhombic (MTO) - > tetragonal (LTT1) transition at about 65 K, the LTT1 - > orthorhombic (LTO) transition at about 50 K, and then the continuous LTO - > tetragonal (LTT2) transition at about 30 K. In the case of La1.875-xNdxBa0.125CuO4 (0.06≤x≤0.20) and La1.875-xSmxBa0.125CuO4 (0

AB - The structure and superconductivity of La1.875-xNdxBa0.125CuO4 (0≤x≤0.20) and La1.875-xSmxBa0.125CuO4 (0≤x≤0.10) have been studied by X-ray diffraction and magnetic susceptibility over a temperature range down to 10 K. Superconductivity does not recover by Nd doping up to x=0.20 and Sm doping up to x=0.10. X-ray diffraction revealed that new structural transitions appear at low temperature. La1.835Nd0.04Ba0.125CuO4 undergoes the discontinuous orthorhombic (MTO) - > tetragonal (LTT1) transition at about 65 K, the LTT1 - > orthorhombic (LTO) transition at about 50 K, and then the continuous LTO - > tetragonal (LTT2) transition at about 30 K. In the case of La1.875-xNdxBa0.125CuO4 (0.06≤x≤0.20) and La1.875-xSmxBa0.125CuO4 (0

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Evidence for new phases in Ln-doped La_1.875Ba_0.125CuO₄ (Ln=Nd, Sm)

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