Neutron polarization analysis on the multiferroic TbMn2O5

L. J. Chang, Y. Su, W. Schweika, Th Brückel, Y. Y. Chen, D. S. Jang, R. S. Liu

研究成果: Article同行評審

4 引文 斯高帕斯(Scopus)

摘要

Polycrystalline TbMn2O5 was prepared by the standard solid-state reaction method and characterized by powder X-ray diffraction and magnetization to assure it is of single phase. Heat capacity measurements on the compound reveal an antiferromagnetic phase transition at ∼45 K. A broad peak below ∼6 K in the heat capacity measurements corresponds to the crossover transition of Tb3+ ordering. To confirm these magnetic orderings, neutron powder diffractions on TbMn2O5 with XYZ neutron polarization analysis were performed at the diffuse neutron scattering (DNS) spectrometer, FRJ-II, by using neutron wavelength of 4.8 Å in the temperature range of 1.8-250 K. Magnetic scattering was separated from nuclear coherent and spin incoherent scattering contributions. Long-range ordered magnetic peaks were observed below ∼39 K which is consistent with the heat capacity results. The drastic increasing intensities below ∼6 K indicate the ferromagnetic transition in Tb3+ orderings.

原文English
頁(從 - 到)2517-2519
頁數3
期刊Physica B: Condensed Matter
404
發行號17
DOIs
出版狀態Published - 2009 九月 1

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 凝聚態物理學
  • 電氣與電子工程

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