Confirmation of room temperature ferromagnetism for Mn-doped ZnO micro-tetrapod powders

Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.matlet.2007.08.035

Title:	Confirmation of room temperature ferromagnetism for Mn-doped ZnO micro-tetrapod powders
Authors:	Liu, Z.W. Yang, S.G. Ramanujan, R.V. Ong, C.K.
Keywords:	Magnetic materials Semiconductors ZnO
Issue Date:	31-Mar-2008
Citation:	Liu, Z.W., Yang, S.G., Ramanujan, R.V., Ong, C.K. (2008-03-31). Confirmation of room temperature ferromagnetism for Mn-doped ZnO micro-tetrapod powders. Materials Letters 62 (8-9) : 1255-1258. ScholarBank@NUS Repository. https://doi.org/10.1016/j.matlet.2007.08.035
Abstract:	Room temperature ferromagnetism in the Mn-doped ZnO micro-sized tetrapod powders, synthesized by conventional thermal evaporation, has been confirmed by static and dynamic magnetic property measurements on a large scale of bulk composite samples. A saturation magnetization of 0.02 emu/g and a coercivity of 80 Oe were obtained. No Mn or Mn-rich cluster was detected on the tetrapods by XRD and TEM analysis. The permittivity, permeability and reflection loss spectra of the Zn(Mn)O-polymer composites with various Zn(Mn)O contents have been investigated in a wide frequency range. The ferromagnetism was assumed to originate from carrier-mediated exchange coupling in the high surface density tetrapods. © 2007 Elsevier B.V. All rights reserved.
Source Title:	Materials Letters
URI:	http://scholarbank.nus.edu.sg/handle/10635/96066
ISSN:	0167577X
DOI:	10.1016/j.matlet.2007.08.035
Appears in Collections:	Staff Publications

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