X-ray photoelectron spectroscopy and magnetism of Al2MnNi and Al5Mn3Ni2

The electronic and magnetic properties of Al2MnNi and Al5Mn3Ni2 alloys, obtained from X–ray photoelectron spectroscopy and magnetic measurements, are reported. The most important feature of the XPS spectra is the well-defined magnetic exchange splitting of about 5 eV of the Mn 3s core levels of...

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Autor principal:	Neumann, M
Formato:	article
Lenguaje:	EN
Publicado:	D.Ghitu Institute of Electronic Engineering and Nanotechnologies 2007
Materias:	Physics QC1-999 Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/426e8304690e437691d391cf9e01957e
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spelling	oai:doaj.org-article:426e8304690e437691d391cf9e01957e2021-11-21T12:08:40ZX-ray photoelectron spectroscopy and magnetism of Al2MnNi and Al5Mn3Ni2 2537-63651810-648Xhttps://doaj.org/article/426e8304690e437691d391cf9e01957e2007-01-01T00:00:00Zhttps://mjps.nanotech.md/archive/2007/article/3691https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365The electronic and magnetic properties of Al2MnNi and Al5Mn3Ni2 alloys, obtained from X–ray photoelectron spectroscopy and magnetic measurements, are reported. The most important feature of the XPS spectra is the well-defined magnetic exchange splitting of about 5 eV of the Mn 3s core levels of both alloys, arising from the exchange interactions between the core hole and open 3d shell, giving a clear evidence of the existence of local moments in the Anderson’s sense confined on Mn sites in Al-Mn-Ni alloys. For both alloys the Mn and Ni 3d bands are filled by more than half, which leads to a ferromagnetic coupling between the neighboring local magnetic moments situated at Mn and Ni sites. By correlating the information from the XPS core level spectra and magnetic measurements in the ordered and paramagnetic states, the magnetic behavior of Al2MnNi and Al5Mn3Ni2 cannot be explained in the picture of ferromagnetic systems with a collinear arrangement of the local magnetic moments. We propose a canted ferromagnetism in the two alloys, which should be verified by further neutron diffraction investigations. Neumann, MD.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 6, Iss 1, Pp 86-91 (2007)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronics TK7800-8360
spellingShingle	Physics QC1-999 Electronics TK7800-8360 Neumann, M X-ray photoelectron spectroscopy and magnetism of Al2MnNi and Al5Mn3Ni2
description	The electronic and magnetic properties of Al2MnNi and Al5Mn3Ni2 alloys, obtained from X–ray photoelectron spectroscopy and magnetic measurements, are reported. The most important feature of the XPS spectra is the well-defined magnetic exchange splitting of about 5 eV of the Mn 3s core levels of both alloys, arising from the exchange interactions between the core hole and open 3d shell, giving a clear evidence of the existence of local moments in the Anderson’s sense confined on Mn sites in Al-Mn-Ni alloys. For both alloys the Mn and Ni 3d bands are filled by more than half, which leads to a ferromagnetic coupling between the neighboring local magnetic moments situated at Mn and Ni sites. By correlating the information from the XPS core level spectra and magnetic measurements in the ordered and paramagnetic states, the magnetic behavior of Al2MnNi and Al5Mn3Ni2 cannot be explained in the picture of ferromagnetic systems with a collinear arrangement of the local magnetic moments. We propose a canted ferromagnetism in the two alloys, which should be verified by further neutron diffraction investigations.
format	article
author	Neumann, M
author_facet	Neumann, M
author_sort	Neumann, M
title	X-ray photoelectron spectroscopy and magnetism of Al2MnNi and Al5Mn3Ni2
title_short	X-ray photoelectron spectroscopy and magnetism of Al2MnNi and Al5Mn3Ni2
title_full	X-ray photoelectron spectroscopy and magnetism of Al2MnNi and Al5Mn3Ni2
title_fullStr	X-ray photoelectron spectroscopy and magnetism of Al2MnNi and Al5Mn3Ni2
title_full_unstemmed	X-ray photoelectron spectroscopy and magnetism of Al2MnNi and Al5Mn3Ni2
title_sort	x-ray photoelectron spectroscopy and magnetism of al2mnni and al5mn3ni2
publisher	D.Ghitu Institute of Electronic Engineering and Nanotechnologies
publishDate	2007
url	https://doaj.org/article/426e8304690e437691d391cf9e01957e
work_keys_str_mv	AT neumannm xrayphotoelectronspectroscopyandmagnetismofal2mnniandal5mn3ni2
_version_	1718419181653721088

X-ray photoelectron spectroscopy and magnetism of Al2MnNi and Al5Mn3Ni2

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