Effect of R substitution in spin glass RFeTi2O7 compounds

A. Arauzo,J. Bartolomé,J. Luzón,T. Drokina,G.A. Petrakovskii,M.S. Molokeev

Journal of Magnetism and Magnetic Materials（2020）

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摘要

•RFeTi2O7 behave as insulating spin glasses (SG) combining 3d and 4f elements.•Disorder in the Fe sublattice is driving the SG behavior modulated by the R presence.•R3+ single ion anisotropy increases SG temperature and the coercive field.•Uniaxial anisotropy of R3+ slows down spin dynamics and reduces spin fluctuations.•Increase in the SG temperature correlates with the anisotropic RFe exchange interaction.

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关键词

Magnetism,Spin glass,Anisotropy,Frustration,Anisotropic exchange

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