Synthesis and Soft Magnetic Properties of Mg-doped Ni Nanoparticles

IF 3.1 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemical Research in Chinese Universities Pub Date : 2008-09-01 DOI:10.1016/S1005-9040(08)60112-9

Jing-hai YANG , Bo FENG , Yang LIU , Yong-jun ZHANG , YANG Li-li , Ya-xin WANG , Ji-hui LANG , Dan-dan WANG

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引用次数: 2

Abstract

Mg-doped Ni nanoparticles with good soft magnetic properties were prepared with the sol-gel method and were sintered at 400, 500, 600, and 900 °C in argon atmosphere, respectively. The structure and magnetic properties of the samples were studied by means of X-ray diffraction, TEM, and VSM magnetometers. X-Ray powder diffraction results show that Ni-Mg solid solution was formed with the single phase of face-centered cubic(fcc) structure. The particle size became larger with the increase of temperature. When the sintering temperature was 400 °C, the particle size was 6.3 nm, whereas it was 46.2 nm at 900 °C. Both the saturation magnetization(M_s) and the coercivity were enhanced with the increase of the particle size. The M_s values of the samples ranged from 18.965 to 46.766 emu/g and the coercivity ranged from 1051.3568 to 9145.0848 A/m.

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镁掺杂镍纳米颗粒的合成及其软磁性能

采用溶胶-凝胶法制备了具有良好软磁性能的掺镁镍纳米颗粒，分别在400、500、600和900℃的氩气气氛下烧结。利用x射线衍射仪、透射电镜和VSM磁强计研究了样品的结构和磁性能。x射线粉末衍射结果表明，Ni-Mg固溶体为面心立方(fcc)结构的单相固溶体。随着温度的升高，颗粒尺寸逐渐增大。烧结温度为400℃时，晶粒尺寸为6.3 nm, 900℃时晶粒尺寸为46.2 nm。饱和磁化强度(Ms)和矫顽力随粒径的增大而增大。样品的Ms值为18.965 ~ 46.766 emu/g，矫顽力为1051.3568 ~ 9145.0848 A/m。

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来源期刊

Chemical Research in Chinese Universities 化学-化学综合

CiteScore

5.30

自引率

6.50%

发文量

152

审稿时长

3.0 months

期刊介绍： The journal publishes research articles, letters/communications and reviews written by faculty members, researchers and postgraduates in universities, colleges and research institutes all over China and overseas. It reports the latest and most creative results of important fundamental research in all aspects of chemistry and of developments with significant consequences across subdisciplines. Main research areas include (but are not limited to): Organic chemistry (synthesis, characterization, and application); Inorganic chemistry (bio-inorganic chemistry, inorganic material chemistry); Analytical chemistry (especially chemometrics and the application of instrumental analysis and spectroscopy); Physical chemistry (mechanisms, catalysis, thermodynamics and dynamics); Polymer chemistry and polymer physics (mechanisms, material, catalysis, thermodynamics and dynamics); Quantum chemistry (quantum mechanical theory, quantum partition function, quantum statistical mechanics); Biochemistry; Biochemical engineering; Medicinal chemistry; Nanoscience (nanochemistry, nanomaterials).