Froehlich, Tobias, Stein, Jonas, Bohaty, Ladislav, Becker, Petra, Gukasov, Arsen and Braden, Markus ORCID: 0000-0002-9284-6585 (2018). Structural and magnetic phase transitions in Cs-2[FeCl5(H2O)]. J. Phys.-Condes. Matter, 30 (29). BRISTOL: IOP PUBLISHING LTD. ISSN 1361-648X

Full text not available from this repository.

Abstract

The compound Cs-2[FeCl5(H2O)] is magnetoelectric but not multiferroic with an erythrosiderite-related structure. We present a comprehensive investigation of its structural and antiferromagnetic phase transitions by polarization microscopy, pyroelectric measurements, x-ray diffraction and neutron diffraction. At about (157.6 +/- 0.1) K, the compound changes its symmetry from Cmcm to I2/c, with a doubling of the original c-axis. This transformation is associated with rotations of the [FeCl5O] octahedra and corresponds to an ordering of the H2O molecules and of the related H bonds. A significant ferroelectric polarization can be excluded for this transition by precise pyrocurrent measurements. The antiferromagnetic phase transition occurring at 6.4K results in the magnetic space group I2'/c, which perfectly agrees with previous measurements of the linear magnetoelectric effect and magnetization.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Froehlich, TobiasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stein, JonasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bohaty, LadislavUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Becker, PetraUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gukasov, ArsenUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Braden, MarkusUNSPECIFIEDorcid.org/0000-0002-9284-6585UNSPECIFIED
URN: urn:nbn:de:hbz:38-179522
DOI: 10.1088/1361-648X/aaca6c
Journal or Publication Title: J. Phys.-Condes. Matter
Volume: 30
Number: 29
Date: 2018
Publisher: IOP PUBLISHING LTD
Place of Publication: BRISTOL
ISSN: 1361-648X
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
ANTIFERROMAGNET CS2FECL5.H2O; AQUAPENTACHLOROFERRATE(III)Multiple languages
Physics, Condensed MatterMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/17952

Downloads

Downloads per month over past year

Altmetric

Export

Actions (login required)

View Item View Item