Nd/Ba substitution and oxygen deficiency effects on the pinning properties of Nd1+xBa2-xCu3O7-δ single crystals

S. Shibata; A. Yamamoto; Y. Feng; A. K. Pradhan; T. Machi; N. Koshizuka

doi:10.1016/S0921-4534(01)00341-0

Nd/Ba substitution and oxygen deficiency effects on the pinning properties of Nd_1+xBa_2-xCu₃O_7-δ single crystals

S. Shibata, A. Yamamoto, Y. Feng, A. K. Pradhan, T. Machi, N. Koshizuka

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

3 Citations (Scopus)

Abstract

The origin of the peak effect on J_c is studied for Nd_1+xBa_2-xCu₃O_7-δ single crystals grown by the slow cooling method under various partial O₂ pressures, P_O2 = 0.04 ∼ 1% in Ar atmosphere. We find that the peak effect disappears for the crystals grown under P_O2 ∼ 0.04%, where the Nd/Ba substitution can be negligible. This result demonstrates the important role of Nd/Ba substitution for the peak effect. We also investigate the oxygen vacancy effect on the peak effect by using oxygen deficient samples. The large peak effect at relatively high fields seems to be brought by controlling the amount of Nd/Ba substitution rather than oxygen vacancies in almost fully oxygenated crystals.

Original language	English
Pages (from-to)	523-526
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	357-360
Issue number	SUPPL. 2
DOIs	https://doi.org/10.1016/S0921-4534(01)00341-0
Publication status	Published - 2001 Aug 1
Externally published	Yes

Keywords

Nd/Ba substitution
NdBaCuO single crystals
Oxygen vacancy effect
Peak effect

ASJC Scopus subject areas

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

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title = "Nd/Ba substitution and oxygen deficiency effects on the pinning properties of Nd1+xBa2-xCu3O7-δ single crystals",

abstract = "The origin of the peak effect on Jc is studied for Nd1+xBa2-xCu3O7-δ single crystals grown by the slow cooling method under various partial O2 pressures, PO2 = 0.04 ∼ 1% in Ar atmosphere. We find that the peak effect disappears for the crystals grown under PO2 ∼ 0.04%, where the Nd/Ba substitution can be negligible. This result demonstrates the important role of Nd/Ba substitution for the peak effect. We also investigate the oxygen vacancy effect on the peak effect by using oxygen deficient samples. The large peak effect at relatively high fields seems to be brought by controlling the amount of Nd/Ba substitution rather than oxygen vacancies in almost fully oxygenated crystals.",

keywords = "Nd/Ba substitution, NdBaCuO single crystals, Oxygen vacancy effect, Peak effect",

author = "S. Shibata and A. Yamamoto and Y. Feng and Pradhan, {A. K.} and T. Machi and N. Koshizuka",

year = "2001",

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doi = "10.1016/S0921-4534(01)00341-0",

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TY - JOUR

T1 - Nd/Ba substitution and oxygen deficiency effects on the pinning properties of Nd1+xBa2-xCu3O7-δ single crystals

AU - Shibata, S.

AU - Yamamoto, A.

AU - Feng, Y.

AU - Pradhan, A. K.

AU - Machi, T.

AU - Koshizuka, N.

PY - 2001/8/1

Y1 - 2001/8/1

N2 - The origin of the peak effect on Jc is studied for Nd1+xBa2-xCu3O7-δ single crystals grown by the slow cooling method under various partial O2 pressures, PO2 = 0.04 ∼ 1% in Ar atmosphere. We find that the peak effect disappears for the crystals grown under PO2 ∼ 0.04%, where the Nd/Ba substitution can be negligible. This result demonstrates the important role of Nd/Ba substitution for the peak effect. We also investigate the oxygen vacancy effect on the peak effect by using oxygen deficient samples. The large peak effect at relatively high fields seems to be brought by controlling the amount of Nd/Ba substitution rather than oxygen vacancies in almost fully oxygenated crystals.

AB - The origin of the peak effect on Jc is studied for Nd1+xBa2-xCu3O7-δ single crystals grown by the slow cooling method under various partial O2 pressures, PO2 = 0.04 ∼ 1% in Ar atmosphere. We find that the peak effect disappears for the crystals grown under PO2 ∼ 0.04%, where the Nd/Ba substitution can be negligible. This result demonstrates the important role of Nd/Ba substitution for the peak effect. We also investigate the oxygen vacancy effect on the peak effect by using oxygen deficient samples. The large peak effect at relatively high fields seems to be brought by controlling the amount of Nd/Ba substitution rather than oxygen vacancies in almost fully oxygenated crystals.

KW - Nd/Ba substitution

KW - NdBaCuO single crystals

KW - Oxygen vacancy effect

KW - Peak effect

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