Hydrothermal solvothermal synthesis and microwave absorbing study of MCo2O4 (M = Mn, Ni) microparticles. (17th November 2019)

• Record Type: Journal Article
• Authors: Cheng, Xiankun; Zhou, Xiangbo; Liu, Zhongliang; Zhang, Yongxing; Liu, Qiangchun; Liu, Qinzhuang; Li, Bing
• Is Part Of: Advances in applied ceramics. Volume 118:Number 8(2019)
• Page Start: 466
• Page End: 472
• Publication Date: 2019-11-17
• Subjects: MCo2O4 -- MnCo2O4 microparticles -- NiCo2O4 microcubes -- microwave absorbing properties; Ceramics -- Periodicals; 620.1405
• DOI: 10.1080/17436753.2019.1667174
• Languages: English
• ISSNs: 1743-6753

Abstract

ABSTRACT: MCo2 O4 (M = Mn, Ni) microparticles were synthesised by a simple hydrothermal solvothermal method. The samples were characterised by X-ray diffraction, X-ray energy dispersive spectroscopy and scanning electron microscopy, which showed that MnCo2 O4 microparticles with spherical particles aggregated by a large number of small cubes and cubic shaped NiCo2 O4 microcubes were obtained. The microwave absorption properties of these products were systematically investigated by vector network analysis. Results indicated that the minimum reflection loss value of MnCo2 O4 microparticles was −26.34 dB at 11.04 GHz with the absorber thickness of 2.5 mm, which was much lower than that of NiCo2 O4 microcubes with the same absorber thickness. The possible mechanism was analysed, indicating that the geometry and size of MCo2 O4 (M = Mn, Ni) microparticles played a key role in microwave absorption.