Polarised neutron reflectometry studies of flux penetration in superconducting Nb

J. M. Reynolds; V. Nunez; A. T. Boothroyd; R. Somekh; D. G. Bucknall; S. Langridge

doi:10.1016/S0921-4526(97)00803-X

Polarised neutron reflectometry studies of flux penetration in superconducting Nb

J. M. Reynolds^*, V. Nunez, A. T. Boothroyd, R. Somekh, D. G. Bucknall, S. Langridge

^*Corresponding author for this work

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

Abstract

We have applied the technique of polarised neutron reflectometry (PNR) to investigate the magnetic field penetration in different superconducting phases of Nb, namely the Meissner state (H < H_c1), the mixed state (H_c1 < H < H_c2) and the surface superconductivity state (H_c2 < H < H_c3) around 4 K. The sample was a sputtered film of Nb with a 3 μm thickness on a 5 mm Si crystal substrate. The measurements were carried out on the CRISP reflectometer at the ISIS facility, with field strengths between 400 and 4500 Oe. We present preliminary data for the spin-dependent reflectivity as a function of applied field.

Original language	English
Pages (from-to)	1104-1106
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	241-243
DOIs	https://doi.org/10.1016/S0921-4526(97)00803-X
Publication status	Published - Dec 1997

Keywords

Niobium
Polarized neutrons
Reflectometry
Surface superconductivity

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

Access to Document

10.1016/S0921-4526(97)00803-X

Cite this

@article{62da11867a43492fb3c542ae87203c38,

title = "Polarised neutron reflectometry studies of flux penetration in superconducting Nb",

abstract = "We have applied the technique of polarised neutron reflectometry (PNR) to investigate the magnetic field penetration in different superconducting phases of Nb, namely the Meissner state (H < Hc1), the mixed state (Hc1 < H < Hc2) and the surface superconductivity state (Hc2 < H < Hc3) around 4 K. The sample was a sputtered film of Nb with a 3 μm thickness on a 5 mm Si crystal substrate. The measurements were carried out on the CRISP reflectometer at the ISIS facility, with field strengths between 400 and 4500 Oe. We present preliminary data for the spin-dependent reflectivity as a function of applied field.",

keywords = "Niobium, Polarized neutrons, Reflectometry, Surface superconductivity",

author = "Reynolds, {J. M.} and V. Nunez and Boothroyd, {A. T.} and R. Somekh and Bucknall, {D. G.} and S. Langridge",

year = "1997",

month = dec,

doi = "10.1016/S0921-4526(97)00803-X",

language = "English",

volume = "241-243",

pages = "1104--1106",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

}

TY - JOUR

T1 - Polarised neutron reflectometry studies of flux penetration in superconducting Nb

AU - Reynolds, J. M.

AU - Nunez, V.

AU - Boothroyd, A. T.

AU - Somekh, R.

AU - Bucknall, D. G.

AU - Langridge, S.

PY - 1997/12

Y1 - 1997/12

N2 - We have applied the technique of polarised neutron reflectometry (PNR) to investigate the magnetic field penetration in different superconducting phases of Nb, namely the Meissner state (H < Hc1), the mixed state (Hc1 < H < Hc2) and the surface superconductivity state (Hc2 < H < Hc3) around 4 K. The sample was a sputtered film of Nb with a 3 μm thickness on a 5 mm Si crystal substrate. The measurements were carried out on the CRISP reflectometer at the ISIS facility, with field strengths between 400 and 4500 Oe. We present preliminary data for the spin-dependent reflectivity as a function of applied field.

AB - We have applied the technique of polarised neutron reflectometry (PNR) to investigate the magnetic field penetration in different superconducting phases of Nb, namely the Meissner state (H < Hc1), the mixed state (Hc1 < H < Hc2) and the surface superconductivity state (Hc2 < H < Hc3) around 4 K. The sample was a sputtered film of Nb with a 3 μm thickness on a 5 mm Si crystal substrate. The measurements were carried out on the CRISP reflectometer at the ISIS facility, with field strengths between 400 and 4500 Oe. We present preliminary data for the spin-dependent reflectivity as a function of applied field.

KW - Niobium

KW - Polarized neutrons

KW - Reflectometry

KW - Surface superconductivity

UR - http://www.scopus.com/inward/record.url?scp=0031346760&partnerID=8YFLogxK

U2 - 10.1016/S0921-4526(97)00803-X

DO - 10.1016/S0921-4526(97)00803-X

M3 - Article

AN - SCOPUS:0031346760

SN - 0921-4526

VL - 241-243

SP - 1104

EP - 1106

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

ER -

Polarised neutron reflectometry studies of flux penetration in superconducting Nb

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this