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Title

Magnetic and crystal structures of Er5(SixGe1−x)4

AuthorsRitter, C.; Magen, Cesar; Morellón, Luis; Algarabel, Pedro A. ; Ibarra, M. Ricardo
KeywordsMagnetic and crystallographic structures
Neutron powder diffraction
Macroscopic magnetic
Issue Date26-Apr-2006
PublisherInstitute of Physics Publishing
CitationJournal of physics. Condensed matter 18(16): 3937-3950 (2006)
AbstractThe magnetic and crystallographic structures in the Er5(SixGe1−x)4 system have been investigated for x = 1,0.875 and 0 using macroscopic magnetic measurements and neutron powder diffraction. The existence of a first-order structural transformation from a high-temperature orthorhombic O (I) structure to a low-temperature monoclinic M polymorph in the temperature range 160–220 K has been confirmed for Er5Si4. In contrast, compounds with x = 0.875 and 0 retain their room-temperature crystallographic phases—M and O (II), respectively—on cooling down to 2 K. Both Si-containing alloys adopt canted ferromagnetic structures below K with an easy magnetization direction along the b-axis and a weak antiferromagnetic coupling in the (010) plane. The Er5Ge4 compound orders antiferromagnetically at TN = 14 K in a complex incommensurate structure
Publisher version (URL)http://dx.doi.org/10.1088/0953-8984/18/16/004
URIhttp://hdl.handle.net/10261/19845
DOI10.1088/0953-8984/18/16/004
ISSN1361-648X
Appears in Collections:(ICMA) Artículos
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