Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102268
Title: 1/3 magnetization plateau and frustrated ferrimagnetism in a sodium iron phosphite
Authors: Vasiliev, A. N.
Volkova, O. S.
Zvereva, E. A.
Ovchenkov, E. A.
Munaò, I.
Clark, L.
Lightfoot, P.
Vavilova, E. L.
Kamusella, S.
Klauss, H. -H.
Werner, J.
Koo, C.
Klingeler, R.
Tsirlin, A. A.
Issue Date: 2016
Publisher: American Physical Society
Citation: 1/3 magnetization plateau and frustrated ferrimagnetism in a sodium iron phosphite / A. N. Vasiliev, O. S. Volkova, E. A. Zvereva, et al. — DOI 10.1103/PhysRevB.93.134401 // Physical Review B. — 2016. — Vol. 93. — Iss. 13. — 134401.
Abstract: 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=9.5K and reveals a magnetization plateau at 1/3 saturation. The plateau extends to Bc∼8T, whereas above Bc the magnetization increases linearly until reaching saturation at Bs∼27T. The Mössbauer spectroscopy reveals two magnetically nonequivalent 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∼1.5K within the layers and weaker couplings Ji=0.3-0.4K 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. © 2016 American Physical Society.
Keywords: COUPLINGS
ELECTROSPINNING
FERRIMAGNETISM
IRON
MAGNETIC ANISOTROPY
MAGNETIC MOMENTS
MAGNETIC SUSCEPTIBILITY
SATURATION MAGNETIZATION
SODIUM
SPECIFIC HEAT
AC MAGNETIC SUSCEPTIBILITY
ANTIFERROMAGNETIC EXCHANGE INTERACTIONS
FERRIMAGNETIC ORDER
HIGH FREQUENCY HF
INTERLAYER COUPLING
MAGNETIZATION PLATEAUS
PULSED-FIELD MAGNETIZATION
SSBAUER SPECTROSCOPIES
ELECTRON SPIN RESONANCE SPECTROSCOPY
URI: http://hdl.handle.net/10995/102268
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 84963549013
PURE ID: 790201
ISSN: 24699950
DOI: 10.1103/PhysRevB.93.134401
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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