文献类型：期刊文献

英文题名：Preparation of phase homogeneous Mn-Zn ferrite powder by spray pyrolysis

作者：Zhao, Xinyu[1]; Zheng, Baicun[1]; Gu, Hongchen[1]; Li, Chunzhong[1]; Zhang, Shi Chang[2]; Ownby, P. Darrell[2]

机构：[1]Univ Missouri, Dept Ceram Engn, Rolla, MO 65401 USA;[2]E China Univ Sci & Technol, Inst Tech Chem Phys, Shanghai 200237, Peoples R China

年份：1999

卷号：14

期号：7

起止页码：3073

外文期刊名：JOURNAL OF MATERIALS RESEARCH

收录：;EI(收录号：1999404759144);WOS:【SCI-EXPANDED(收录号:WOS:000082550700053)】；

语种：英文

外文关键词：Magnetic cores - Magnetic properties - Nitrates - Particles (particulate matter) - Porosity - Powders - Pyrolysis - Synthesis (chemical)

摘要：Two kinds of aqueous precursor solutions are used to synthesize Mn-Zn ferrite powders: (i) nitrate (NO) precursor-derived from solutions of Mn(NO3)(2), Zn(NO3)(2), and Fe(NO3)(3); and (ii) acetate (AC) precursor-derived from solutions of Mn(CH3COO)(2) Zn(CH3COO)(2), and Fe(NO3)(3). The composition of the powders synthesized from the precursor AC is very uniform, whereas powders derived from the precursor NO have Mn and Zn segregated on the particle surfaces. In addition, the powders synthesized from precursor AC are solid spherical particles with fine porosity, whereas many hollow and fragmented particles are observed in the powder derived from precursor NO. Overall, the properties of Mn-Zn ferrite cores prepared from the precursor AC are superior to those prepared from the precursor NO. The reasons for the differences are explained and described in detail. The AC precursor powders synthesized by spray pyrolysis produced Mn-Zn ferrite cores with good magnetic properties.