Superconductivity and elastic properties of La1.85-1.5xSr0.15+1.5xCu1-xMnxO4 with x = 0, 0.02 and 0.04

The effects of mixed-valence Mn substitution at the Cu site on the superconducting and elastic properties of La1.85-1.5xSr0.15+1.5xCu1-xMnxO4 (x = 0, 0.02 and 0.04) were studied. The samples were characterized by X-ray diffraction (XRD) method, temperature-dependent resistance measurements, scannin...

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Main Authors:	Nor Azah Nik-Jaafar, R. Abd-Shukor
Format:	Article
Language:	English
Published:	Penerbit Universiti Kebangsaan Malaysia 2018
Online Access:	http://journalarticle.ukm.my/12216/ http://journalarticle.ukm.my/12216/ http://journalarticle.ukm.my/12216/1/32%20Nor%20Azah%20Nik%20Jaafar.pdf

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recordtype	eprints
spelling	ukm-122162018-10-16T13:50:06Z http://journalarticle.ukm.my/12216/ Superconductivity and elastic properties of La1.85-1.5xSr0.15+1.5xCu1-xMnxO4 with x = 0, 0.02 and 0.04 Nor Azah Nik-Jaafar, R. Abd-Shukor, The effects of mixed-valence Mn substitution at the Cu site on the superconducting and elastic properties of La1.85-1.5xSr0.15+1.5xCu1-xMnxO4 (x = 0, 0.02 and 0.04) were studied. The samples were characterized by X-ray diffraction (XRD) method, temperature-dependent resistance measurements, scanning electron microscopy (SEM) and sound velocity measurements at room temperature. An elastic softening and a decrease in the critical temperature Tc was observed as Mn was substituted for Cu. The Debye temperature θD for x = 0 and 0.02 void free samples were calculated to be 459 K and 430 K, respectively. Internal lattice strain which is related to lattice parameter ratio a/c did not correlate with Tc. The electron-phonon coupling estimated using the conventional Bardeen-Cooper-Schrieffer (BCS) theory was λ = 0.367 (x = 0) and 0.368 (x = 0.02). The electron-phonon coupling in two-dimensional van Hove scenario was calculated to be λvH = 0.0148 (x = 0) and 0.0149 (x = 0.02). These results were compared with other cuprates and related superconductors. The comparison showed that other than electron-phonon coupling, the elastic moduli might play an important role in the mechanism of superconductivity in these materials. Penerbit Universiti Kebangsaan Malaysia 2018-08 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/12216/1/32%20Nor%20Azah%20Nik%20Jaafar.pdf Nor Azah Nik-Jaafar, and R. Abd-Shukor, (2018) Superconductivity and elastic properties of La1.85-1.5xSr0.15+1.5xCu1-xMnxO4 with x = 0, 0.02 and 0.04. Sains Malaysiana, 47 (8). pp. 1907-1911. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol47num8_2018/contentsVol47num8_2018.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	The effects of mixed-valence Mn substitution at the Cu site on the superconducting and elastic properties of La1.85-1.5xSr0.15+1.5xCu1-xMnxO4 (x = 0, 0.02 and 0.04) were studied. The samples were characterized by X-ray diffraction (XRD) method, temperature-dependent resistance measurements, scanning electron microscopy (SEM) and sound velocity measurements at room temperature. An elastic softening and a decrease in the critical temperature Tc was observed as Mn was substituted for Cu. The Debye temperature θD for x = 0 and 0.02 void free samples were calculated to be 459 K and 430 K, respectively. Internal lattice strain which is related to lattice parameter ratio a/c did not correlate with Tc. The electron-phonon coupling estimated using the conventional Bardeen-Cooper-Schrieffer (BCS) theory was λ = 0.367 (x = 0) and 0.368 (x = 0.02). The electron-phonon coupling in two-dimensional van Hove scenario was calculated to be λvH = 0.0148 (x = 0) and 0.0149 (x = 0.02). These results were compared with other cuprates and related superconductors. The comparison showed that other than electron-phonon coupling, the elastic moduli might play an important role in the mechanism of superconductivity in these materials.
format	Article
author	Nor Azah Nik-Jaafar, R. Abd-Shukor,
spellingShingle	Nor Azah Nik-Jaafar, R. Abd-Shukor, Superconductivity and elastic properties of La1.85-1.5xSr0.15+1.5xCu1-xMnxO4 with x = 0, 0.02 and 0.04
author_facet	Nor Azah Nik-Jaafar, R. Abd-Shukor,
author_sort	Nor Azah Nik-Jaafar,
title	Superconductivity and elastic properties of La1.85-1.5xSr0.15+1.5xCu1-xMnxO4 with x = 0, 0.02 and 0.04
title_short	Superconductivity and elastic properties of La1.85-1.5xSr0.15+1.5xCu1-xMnxO4 with x = 0, 0.02 and 0.04
title_full	Superconductivity and elastic properties of La1.85-1.5xSr0.15+1.5xCu1-xMnxO4 with x = 0, 0.02 and 0.04
title_fullStr	Superconductivity and elastic properties of La1.85-1.5xSr0.15+1.5xCu1-xMnxO4 with x = 0, 0.02 and 0.04
title_full_unstemmed	Superconductivity and elastic properties of La1.85-1.5xSr0.15+1.5xCu1-xMnxO4 with x = 0, 0.02 and 0.04
title_sort	superconductivity and elastic properties of la1.85-1.5xsr0.15+1.5xcu1-xmnxo4 with x = 0, 0.02 and 0.04
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2018
url	http://journalarticle.ukm.my/12216/ http://journalarticle.ukm.my/12216/ http://journalarticle.ukm.my/12216/1/32%20Nor%20Azah%20Nik%20Jaafar.pdf
first_indexed	2023-09-18T20:02:07Z
last_indexed	2023-09-18T20:02:07Z
_version_	1777406917982814208

Superconductivity and elastic properties of La1.85-1.5xSr0.15+1.5xCu1-xMnxO4 with x = 0, 0.02 and 0.04

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