High temperature spin-freezing transition in Pyrochlore Eu2Ti2O7: A new observation from ac-susceptibility

Arkadeb Pal; Abhishek Singh; Prajyoti Singh; A. K. Ghosh; Sandip Chatterjee

doi:10.1016/j.jmmm.2018.04.060

High temperature spin-freezing transition in Pyrochlore Eu2Ti2O7: A new observation from ac-susceptibility

Materials Science 2018-05-23 v1

Authors: Arkadeb Pal , Abhishek Singh , Prajyoti Singh , A. K. Ghosh , Sandip Chatterjee

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Abstract

The magnetization (both dc and ac) of pyrochlore Eu2Ti2O7 have been investigated. Ac susceptibility measurements reveal a new unusual spin freezing below 35K for pure Eu2Ti2O7. Frequency dependence of these ac peak positions indicate slow spin relaxation near this temperature and it follows the Arrhenius formula suggesting a thermally activated relaxation process. The origin of this spin freezing has been attributed essentially to a single ion process which is associated to Eu3+ spin relaxation. Non-magnetic dilution by Y3+ ions also confirms the single ion freezing.

Keywords

magnetic materials and spin systems spin relaxation frustrated magnetism

Cite

@article{arxiv.1708.02465,
  title  = {High temperature spin-freezing transition in Pyrochlore Eu2Ti2O7: A new observation from ac-susceptibility},
  author = {Arkadeb Pal and Abhishek Singh and Prajyoti Singh and A. K. Ghosh and Sandip Chatterjee},
  journal= {arXiv preprint arXiv:1708.02465},
  year   = {2018}
}

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15 pages, 6 figures

High temperature spin-freezing transition in Pyrochlore Eu2Ti2O7: A new observation from ac-susceptibility

Abstract

Keywords

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