Anisotropy of the magnetization of single crystals and bulk high-Tc superconductors

U. Yaron; I. Felner; Y. Kornyushin; Y. Yeshurun

doi:10.1016/0921-4534(93)90895-w

Anisotropy of the magnetization of single crystals and bulk high-T_c superconductors

U. Yaron, I. Felner, Y. Kornyushin, Y. Yeshurun

Department of Physics - at Bar-Ilan University

Hebrew University of Jerusalem

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

1 Scopus citations

Abstract

Measurements of the angular dependence of the zero-field-cooled (ZFC), field-cooled (FC) and remanent magnetization of both high-T_c single crystals and polycrystalline samples show significant anisotropy. Comparison of the results obtained on both, prove that most anisotropy is governed by the shape of the sample via the demagnetizing factors. For ceramic samples, there is competition between the demagnetizing factors of the sample as a whole, N, and that of the grains, n. According to a suggested phenomenological model, the magnetic moment is related to the external field by a relation involving an effective demagnetizing factor, N_eff, which depends on the fraction of superconducting volume, which is itself a field dependent quantity. At low fields, N_eff approaches N and n for highly compact and dilute samples, respectively. Between these extremes, N_eff is a weighted average of N and n.

Original language	English
Pages (from-to)	159-162
Number of pages	4
Journal	Physica C: Superconductivity and its Applications
Volume	209
Issue number	1-3
DOIs	https://doi.org/10.1016/0921-4534(93)90895-w
State	Published - 20 Apr 1993

Bibliographical note

Funding Information:
This research was supported by a grant from the 1Vhmstry of Science and Technology, Jerusalem, Israel, by the Klachky Foundation for Superconductivity and by a grant from the U.S.-Israel Binational Science Foundation (BSF), Jerusalem, Israel.

Funding

This research was supported by a grant from the 1Vhmstry of Science and Technology, Jerusalem, Israel, by the Klachky Foundation for Superconductivity and by a grant from the U.S.-Israel Binational Science Foundation (BSF), Jerusalem, Israel.

Funders	Funder number
Klachky Foundation
U.S.-Israel Binational Science Foundation
United States-Israel Binational Science Foundation

Access to Document

10.1016/0921-4534(93)90895-w

Cite this

@article{480e209665d441e182c4629edc13ccc2,

title = "Anisotropy of the magnetization of single crystals and bulk high-Tc superconductors",

abstract = "Measurements of the angular dependence of the zero-field-cooled (ZFC), field-cooled (FC) and remanent magnetization of both high-Tc single crystals and polycrystalline samples show significant anisotropy. Comparison of the results obtained on both, prove that most anisotropy is governed by the shape of the sample via the demagnetizing factors. For ceramic samples, there is competition between the demagnetizing factors of the sample as a whole, N, and that of the grains, n. According to a suggested phenomenological model, the magnetic moment is related to the external field by a relation involving an effective demagnetizing factor, Neff, which depends on the fraction of superconducting volume, which is itself a field dependent quantity. At low fields, Neff approaches N and n for highly compact and dilute samples, respectively. Between these extremes, Neff is a weighted average of N and n.",

author = "U. Yaron and I. Felner and Y. Kornyushin and Y. Yeshurun",

note = "Funding Information: This research was supported by a grant from the 1Vhmstry of Science and Technology, Jerusalem, Israel, by the Klachky Foundation for Superconductivity and by a grant from the U.S.-Israel Binational Science Foundation (BSF), Jerusalem, Israel.",

year = "1993",

month = apr,

day = "20",

doi = "10.1016/0921-4534(93)90895-w",

language = "אנגלית",

volume = "209",

pages = "159--162",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

publisher = "Elsevier B.V.",

number = "1-3",

}

TY - JOUR

T1 - Anisotropy of the magnetization of single crystals and bulk high-Tc superconductors

AU - Yaron, U.

AU - Felner, I.

AU - Kornyushin, Y.

AU - Yeshurun, Y.

N1 - Funding Information: This research was supported by a grant from the 1Vhmstry of Science and Technology, Jerusalem, Israel, by the Klachky Foundation for Superconductivity and by a grant from the U.S.-Israel Binational Science Foundation (BSF), Jerusalem, Israel.

PY - 1993/4/20

Y1 - 1993/4/20

N2 - Measurements of the angular dependence of the zero-field-cooled (ZFC), field-cooled (FC) and remanent magnetization of both high-Tc single crystals and polycrystalline samples show significant anisotropy. Comparison of the results obtained on both, prove that most anisotropy is governed by the shape of the sample via the demagnetizing factors. For ceramic samples, there is competition between the demagnetizing factors of the sample as a whole, N, and that of the grains, n. According to a suggested phenomenological model, the magnetic moment is related to the external field by a relation involving an effective demagnetizing factor, Neff, which depends on the fraction of superconducting volume, which is itself a field dependent quantity. At low fields, Neff approaches N and n for highly compact and dilute samples, respectively. Between these extremes, Neff is a weighted average of N and n.

AB - Measurements of the angular dependence of the zero-field-cooled (ZFC), field-cooled (FC) and remanent magnetization of both high-Tc single crystals and polycrystalline samples show significant anisotropy. Comparison of the results obtained on both, prove that most anisotropy is governed by the shape of the sample via the demagnetizing factors. For ceramic samples, there is competition between the demagnetizing factors of the sample as a whole, N, and that of the grains, n. According to a suggested phenomenological model, the magnetic moment is related to the external field by a relation involving an effective demagnetizing factor, Neff, which depends on the fraction of superconducting volume, which is itself a field dependent quantity. At low fields, Neff approaches N and n for highly compact and dilute samples, respectively. Between these extremes, Neff is a weighted average of N and n.

UR - http://www.scopus.com/inward/record.url?scp=43949168392&partnerID=8YFLogxK

U2 - 10.1016/0921-4534(93)90895-w

DO - 10.1016/0921-4534(93)90895-w

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:43949168392

SN - 0921-4534

VL - 209

SP - 159

EP - 162

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - 1-3

ER -