Zn- or Ca-substitution effects on Raman scattering in NdBa2Cu3O7

N. Watanabe; I. Kato; T. Machi; S. Shibata; N. Koshizuka; M. Murakami

doi:10.1016/S0921-4534(02)01439-9

Zn- or Ca-substitution effects on Raman scattering in NdBa₂Cu₃O₇

N. Watanabe, I. Kato, T. Machi, S. Shibata, N. Koshizuka, M. Murakami

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

3 Citations (Scopus)

Abstract

The polarized Raman spectra of Zn or Ca doped NdBa₂Cu₃O_7-δ single crystals have been investigated. It was found that the linewidth of Ba mode in Zn doped Nd 1:2:3 is broader than those in pure Nd 1:2:3. This result suggests that the Nd substitution on Ba sites occurred in Zn doped Nd 1:2:3. In x(zz)x̄ geometry the relative intensity of the O(4) mode in Zn doped Nd 1:2:3 is smaller than those in pure or Ca doped Nd 1:2:3. The difference between Zn doped and Ca doped Nd 1:2:3 in the relative intensity of the O(4) mode may be produced by the disordering in the CuO₂ plane.

Original language	English
Pages (from-to)	337-340
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	378-381
Issue number	PART 1
DOIs	https://doi.org/10.1016/S0921-4534(02)01439-9
Publication status	Published - 2002 Oct 1
Externally published	Yes

Keywords

NdBaCuO
Peak effect
Phonon spectrum
Raman scattering
Substitution effects

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4534(02)01439-9

Cite this

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title = "Zn- or Ca-substitution effects on Raman scattering in NdBa2Cu3O7",

abstract = "The polarized Raman spectra of Zn or Ca doped NdBa2Cu3O7-δ single crystals have been investigated. It was found that the linewidth of Ba mode in Zn doped Nd 1:2:3 is broader than those in pure Nd 1:2:3. This result suggests that the Nd substitution on Ba sites occurred in Zn doped Nd 1:2:3. In x(zz){\=x} geometry the relative intensity of the O(4) mode in Zn doped Nd 1:2:3 is smaller than those in pure or Ca doped Nd 1:2:3. The difference between Zn doped and Ca doped Nd 1:2:3 in the relative intensity of the O(4) mode may be produced by the disordering in the CuO2 plane.",

keywords = "NdBaCuO, Peak effect, Phonon spectrum, Raman scattering, Substitution effects",

author = "N. Watanabe and I. Kato and T. Machi and S. Shibata and N. Koshizuka and M. Murakami",

note = "Funding Information: This work is supported by NEDO as Collaborative Research and development of Fundamental Technologies for Superconductivity Applications.",

year = "2002",

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doi = "10.1016/S0921-4534(02)01439-9",

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T1 - Zn- or Ca-substitution effects on Raman scattering in NdBa2Cu3O7

AU - Watanabe, N.

AU - Kato, I.

AU - Machi, T.

AU - Shibata, S.

AU - Koshizuka, N.

AU - Murakami, M.

N1 - Funding Information: This work is supported by NEDO as Collaborative Research and development of Fundamental Technologies for Superconductivity Applications.

PY - 2002/10/1

Y1 - 2002/10/1

N2 - The polarized Raman spectra of Zn or Ca doped NdBa2Cu3O7-δ single crystals have been investigated. It was found that the linewidth of Ba mode in Zn doped Nd 1:2:3 is broader than those in pure Nd 1:2:3. This result suggests that the Nd substitution on Ba sites occurred in Zn doped Nd 1:2:3. In x(zz)x̄ geometry the relative intensity of the O(4) mode in Zn doped Nd 1:2:3 is smaller than those in pure or Ca doped Nd 1:2:3. The difference between Zn doped and Ca doped Nd 1:2:3 in the relative intensity of the O(4) mode may be produced by the disordering in the CuO2 plane.

AB - The polarized Raman spectra of Zn or Ca doped NdBa2Cu3O7-δ single crystals have been investigated. It was found that the linewidth of Ba mode in Zn doped Nd 1:2:3 is broader than those in pure Nd 1:2:3. This result suggests that the Nd substitution on Ba sites occurred in Zn doped Nd 1:2:3. In x(zz)x̄ geometry the relative intensity of the O(4) mode in Zn doped Nd 1:2:3 is smaller than those in pure or Ca doped Nd 1:2:3. The difference between Zn doped and Ca doped Nd 1:2:3 in the relative intensity of the O(4) mode may be produced by the disordering in the CuO2 plane.

KW - NdBaCuO

KW - Peak effect

KW - Phonon spectrum

KW - Raman scattering

KW - Substitution effects

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