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Geometric Spin Frustration in Zn1-xNixCr2O4 System

Title
Geometric Spin Frustration in Zn1-xNixCr2O4 System
Authors
Khan, A.Kaneko, H.Faruk, M.O.Alam, M.K.Kim, C.Naher, S.Suzuki, H.
DGIST Authors
Alam, M.K.; Kim, C.
Issue Date
2017
Citation
18th International Conference on Strongly Correlated Electron Systems, SCES 2016, 807(4)
Type
Article
Article Type
Conference Paper
Keywords
Crystal StructureGeometric FrustrationGeometrical FrustrationsGeometryLow Temperature X Ray DiffractionMagnetometersNickelQuantum ElectronicsQuantum FluctuationSpin FluctuationsSpin FrustrationsSpinel CompoundsSquid MagnetometersTemperatureTetragonal PhaseX Ray DiffractionZinc (Zn)
ISSN
1742-6588
Abstract
At room temperature, the cubic spinel ZnCr2O4 is known as the typical geometrically frustrated spin system. Upon cooling this compound undergoes a crystal structure change driven by removing the frustrated degenerated states, accompanying with the magnetic ordering. In the tetragonal phase the c-axis is larger than the a-axis. Another spinel compound NiCr2O4 takes the cubic structure above 310 K. Below 310 K NiCr2O4 is tetragonally distorted (c/a < 1) due to cooperative Jahn-Teller ordering. In the previous reports, the geometrical frustrated spin fluctuations still exist in NiCr2O4. In this report we investigated how the geometrical frustration changes and how the ratio of the crystal axis, c/a changes in Zn1-xNixCr2O4 system by the low temperature x-ray diffraction measurement and the SQUID magnetometer.
URI
http://hdl.handle.net/20.500.11750/4279
DOI
10.1088/1742-6596/807/4/042004
Publisher
Institute of Physics Publishing
Files:
There are no files associated with this item.
Collection:
Emerging Materials ScienceLab for NanoBio-Materials & SpinTronics(nBEST)1. Journal Articles


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