Please use this identifier to cite or link to this item: http://dl.pgu.ac.ir/handle/10023/8435
Title: 1/3 magnetization plateau and frustrated ferrimagnetism in a sodium iron phosphite
Keywords: QC Physics;QC
Issue Date: 1-Apr-2016
Description: AT was supported by the Federal Ministry for Education and Research through the Sofja Kovalevskaya Award of Alexander von Humboldt Foundation. This work was supported in part by Russian Foundation for Basic Research grants 14-02-00111, 14-02-00245, 16-02-00021, from the Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST «MISiS» (№ К2-2015-075 and № K4-2015-020) and by Act 211 of the Government of Russian Federation, agreement № 02.A03.21.0006. EAZ, JW and RK acknowledge support by the Excellence Initiative of the German Federal Government and States. PL thanks EPSRC (EP/K503162/1) for partial support of a studentship to IM and the Leverhulme Trust for the award of a post-doctoral fellowship (RPG-2013-343) to LC. SK is grateful for the funding by SSP1458 of the DFG.;The sodium-iron phosphite NaFe3(HPO3)2(H2PO3)6 is studied by ac-magnetic susceptibility, pulsed-field magnetization, specific heat, and high-frequency electron spin resonance (HF-ESR) measurements combined with Mössbauer spectroscopy and density-functional calculations. We show that this compound develops ferrimagnetic order below TC = 9.5 K and reveals a magnetization plateau at 1/3-saturation. The plateau extends to Bc ~ 8 T, whereas above Bc the magnetization increases linearly until reaching saturation at Bs ~ 27 T. The Mössbauer spectroscopy reveals two magnetically non-equivalent iron sites with the 2:1 ratio. The HF-ESR spectra are consistent with a two-sublattice ferrimagnet and additionally pinpoint weak magnetic anisotropy as well as short-range spin order that persists well above TC. The ferrimagnetic order in the title compound is stabilized by a network of purely antiferromagnetic exchange interactions. The spin lattice comprises layers coinciding with the crystallographic (10-1) planes, with stronger couplings Ji ~ 1.5 K within the layers and weaker couplings Ji = 0.3−0.4 K between the layers. Both intralayer and interlayer couplings are frustrated. The ensuing ferrimagnetic order arises from a subtle interplay of the frustrated but nonequivalent exchange couplings.;Postprint;Postprint;Peer reviewed
URI: http://dx.doi.org/10.1103/PhysRevB.93.134401
Other Identifiers: Vasiliev , A , Volkova , O , Zvereva , E , Ovchenkov , E , Munao' , I , Clark , L M , Lightfoot , P , Vavilova , E , Kamusella , S , Klaus , H , Werner , J , Koo , C , Klingeler , R & Tsirlin , A 2016 , ' 1/3 magnetization plateau and frustrated ferrimagnetism in a sodium iron phosphite ' Physical Review. B, Condensed matter and materials physics , vol 93 , no. 13 , 134401 . DOI: 10.1103/PhysRevB.93.134401
1098-0121
PURE: 241568167
PURE UUID: 46b8b3ca-ef20-46af-9d2e-95b7a8861c16
Type Of Material: OTHER
Appears in Collections:Chemistry (School of)

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