Magnetic and dielectric properties of HoMnO3 nanoparticles synthesized by the polymerized complex method |
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| Authors: | Xianguo Liu Siu Wing Or Yuping Sun Chuangui Jin Yaohui Lv Yuxi Wu |
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| Affiliation: | 1. School of Materials Science and Engineering, Anhui University of technology, Ma''anshan, Anhui 243002, PR China;2. Department of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong;3. Center for Engineering practice and Innovation Education, Anhui University of technology, Ma''anshan, Anhui 243002, PR China;4. Institute of Molecular Engineering and Applied Chemistry, Anhui University of Technology, Ma''anshan, Anhui 243002, PR China |
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| Abstract: | In this paper, we report on the magnetic and dielectric properties of HoMnO3 nanoparticles with different size synthesized by a polymerized complex method have been investigated. The HoMnO3 nanoparticles crystallized in hexagonal perovskite-type structure. The zero-field-cooled magnetic susceptibility curve of HoMnO3 nanoparticles with averaged size of 30 nm shows that complicated magnetic transitions occurred in a temperature range from 2 to 100 K, which was confirmed by magnetic hysteresis loops. With increasing the particle size, the antiferromagnetic (AFM) transition temperature increases from 56 to 77 K, due to the reduced surface-to-volume ratio. Moreover, with a decrease in particle size, the Mn-spin reorientation temperature (TSR) is enhanced from 44 to 48 K. |
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| Keywords: | Magnetic materials Nanostructures Magnetic properties Electron microscopy (STEM TEM and SEM) |
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