Magnetization and 11B NMR study of Mg1-xAlxB2 superconductors

M. Pissas; G. Papavassiliou; M. Karayanni; M. Fardis; I. Maurin; I. Margiolaki; Kosmas Prassides; C. Christides

Magnetization and ¹¹B NMR study of Mg_1-xAl_xB₂ superconductors

M. Pissas, G. Papavassiliou, M. Karayanni, M. Fardis, I. Maurin, I. Margiolaki, Kosmas Prassides, C. Christides

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

Abstract

We demonstrate the magnetic-field distribution of the pure vortex state in lightly doped Mg_1-xAl_xB₂ (x ≤0.025) powder samples, by using ¹¹B nuclear magnetic resonance in magnetic fields of 23.5 and 47 kOe. The magnetic-field distribution at T=5 K is Al-doping dependent, revealing a considerable decrease of anisotropy in respect to pure MgB₂. This result correlates nicely with magnetization measurements and is consistent with σ-band hole driven superconductivity for MgB₂.

Original language	English
Article number	184514
Pages (from-to)	1845141-1845145
Number of pages	5
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	65
Issue number	18
Publication status	Published - 2002 May 1
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

Magnetization and ¹¹B NMR study of Mg_1-xAl_xB₂ superconductors. / Pissas, M.; Papavassiliou, G.; Karayanni, M.; Fardis, M.; Maurin, I.; Margiolaki, I.; Prassides, Kosmas; Christides, C.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 65, No. 18, 184514, 01.05.2002, p. 1845141-1845145.

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

@article{a7a49f8498d04d33acc8fd23e2e8f134,

title = "Magnetization and 11B NMR study of Mg1-xAlxB2 superconductors",

abstract = "We demonstrate the magnetic-field distribution of the pure vortex state in lightly doped Mg1-xAlxB2 (x ≤0.025) powder samples, by using 11B nuclear magnetic resonance in magnetic fields of 23.5 and 47 kOe. The magnetic-field distribution at T=5 K is Al-doping dependent, revealing a considerable decrease of anisotropy in respect to pure MgB2. This result correlates nicely with magnetization measurements and is consistent with σ-band hole driven superconductivity for MgB2.",

author = "M. Pissas and G. Papavassiliou and M. Karayanni and M. Fardis and I. Maurin and I. Margiolaki and Kosmas Prassides and C. Christides",

year = "2002",

month = may,

day = "1",

language = "English",

volume = "65",

pages = "1845141--1845145",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "0163-1829",

publisher = "American Institute of Physics Publising LLC",

number = "18",

}

TY - JOUR

T1 - Magnetization and 11B NMR study of Mg1-xAlxB2 superconductors

AU - Pissas, M.

AU - Papavassiliou, G.

AU - Karayanni, M.

AU - Fardis, M.

AU - Maurin, I.

AU - Margiolaki, I.

AU - Prassides, Kosmas

AU - Christides, C.

PY - 2002/5/1

Y1 - 2002/5/1

N2 - We demonstrate the magnetic-field distribution of the pure vortex state in lightly doped Mg1-xAlxB2 (x ≤0.025) powder samples, by using 11B nuclear magnetic resonance in magnetic fields of 23.5 and 47 kOe. The magnetic-field distribution at T=5 K is Al-doping dependent, revealing a considerable decrease of anisotropy in respect to pure MgB2. This result correlates nicely with magnetization measurements and is consistent with σ-band hole driven superconductivity for MgB2.

AB - We demonstrate the magnetic-field distribution of the pure vortex state in lightly doped Mg1-xAlxB2 (x ≤0.025) powder samples, by using 11B nuclear magnetic resonance in magnetic fields of 23.5 and 47 kOe. The magnetic-field distribution at T=5 K is Al-doping dependent, revealing a considerable decrease of anisotropy in respect to pure MgB2. This result correlates nicely with magnetization measurements and is consistent with σ-band hole driven superconductivity for MgB2.

UR - http://www.scopus.com/inward/record.url?scp=0036564312&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036564312&partnerID=8YFLogxK

M3 - Article

VL - 65

SP - 1845141

EP - 1845145

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

SN - 0163-1829

IS - 18

M1 - 184514

ER -

Magnetization and ¹¹B NMR study of Mg_1-xAl_xB₂ superconductors

Abstract

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this