Size Effect on LuMn2O5 Nanorods

Ting Wei Hsu, Chung Cheun Yang, Hao Wei Tu, Yong Xiang Tong, Kuen Song Lin

Research output: Contribution to journalArticlepeer-review


LuMn2O5 multiferroic nanorods were fabricated using the hydrothermal method with three sizes of diameters (( LC ) × axial lengths of 66(22) nm × 18(5) nm, 78(38) nm × 22 (9) nm, and 91(35) nm × 20(7) nm, as determined by the field emission transmission electron microscope and selection area electron diffraction. A small ferrimagnetic (FIM) peak was obtained at 27 K from the nanorods with ( LC ) = 66 and 78 nm, and the 91 nm sample exhibited FIM behavior below 43 K. All the samples had a hysteresis loop at 2 K. The fitted μeff (effect moment), Tso (spin-orbit interaction), and the coercively greatly increased with size to ( LC ) = 91 nm. These results reveal that the size importantly affects the magnetic properties between ( LC ) = 78 and 91 nm. Raman spectra were obtained at various temperatures to determine the effects of the size on the ( LC ) = 78 and 91 nm samples. The red-shift of the Ag+ B1g mode increased with temperature only for the 91 nm sample, revealing that the interaction between the Mn-O bonds is more sensitive to temperature in larger LuMn2O5 nanorods.

Original languageEnglish
Article number7430321
JournalIEEE Transactions on Magnetics
Issue number7
StatePublished - Jul 2016


  • Raman spectroscopy
  • magnetic susceptibility
  • nanorod
  • size effect


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