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Study on magnetic properties of strontium ferrite based on the technology of electron paramagnetic resonance

Li Shao-Bo Yin Chun-Hao Xu Zhen-Kun Li Pei-Xin Wu Cai-Ping Feng Ming-Yang

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Study on magnetic properties of strontium ferrite based on the technology of electron paramagnetic resonance

Li Shao-Bo, Yin Chun-Hao, Xu Zhen-Kun, Li Pei-Xin, Wu Cai-Ping, Feng Ming-Yang
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  • In order to study how the ingredient, sintering temperature, oxygen, doping and other conditions affect magnetic properties of strontium ferrite powder, a strontium ferrite powder is prepared by sol-gel method, and a new method of studying magnetic properties of strontium ferrite powder based on an electron paramagnetic resonance (EPR) is established in this paper. The sintered samples are tested by electron paramagnetic resonance spectrometer. Results show that -Fe2O3, a paramagnetic intermediate, is most compared with other ratios under calcined at 400 ℃ and the strontium iron mole ratio of 1:9; while at the other temperatures it decreases and the ferromagnetic phase increases; the optimum calcination temperature is between 800 ℃ and 900 ℃. These facts are caused by both external magnetic field and other magnetic fields, thus resulting in some new stronger magnetic moment interactions. Results also show that a large quantity of paramagnetic -Fe2O3 is found under hypoxic annealing environment, which is not conducible to generating the ferrimagnetic phase; X-ray diffraction (XRD) analysis shows that the others are paramagnetic and ferrimagnetic phase except a bit of other phases; both EPR spectra and XRD spectra show that the paramagnetic phase is least, and ferrimagnetic phase is most in the sintering sample when strontium iron mole ratio is 1:9, so the sample owns the strongest magnetism. The sample remanence experiment by milli-tesla meter also confirms these results. It is also found that paramagnetic phase can effectively decrease and ferrimagnetism is enhanced when samples are doped by lanthanum ion accounting for 20%-30% of the total number of moles of strontium lanthanum.
    • Funds: Project supported by the Fundamental Research Funds for the Central Universities, China (Grant No. 2013xk04).
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    [2]

    Feng J 2002 Acta Phys. Sin. 51 1841 (in Chinese) [冯洁 2002 物理学报 51 1841]

    [3]

    Kuang X D, Qiu S X, Yuan X Z 2013 Baosteel Meishan 34 27 (in Chinese) [匡雪冬, 邱士星, 袁小镇2013 梅山科技34 27]

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    Zhang Z Y, Liu X X, Wu Y P, Wang X J 2012 Surf. Technol. 41 109 (in Chinese) [张泽洋, 刘祥萱, 吴有朋, 王煊军2012 表面技术41 109]

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    [11]

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    [13]

    Garca-Cerda L A, Rodrguez-Fernndez O S, Resndiz-Hernndez P J 2004 J. Alloys. Compd. 369 182

    [14]

    Huang Y, Du C F, Qin X L, He W D 2007 Chin. J.Mater. Res. 21 324 (in Chinese) [黄英, 杜朝锋, 秦秀兰,何文栋2007 材料研究学报21 324]

    [15]

    Huang K, L J G 2009 J. Anqing Teach. Coll. (Nat. Sci.Ed.) 15 67 (in Chinese) [黄凯, 吕建国2009 安庆师范学院学报(自然科学版) 15 67]

    [16]

    Xu J, Dong J F, Xiang W D, Bao Q J 2008 Rare Metal Mater. Eng. 37 463 (in Chinese) [徐键, 董建峰, 向卫东,鲍前君2008 稀有金属材料与工程37 463]

    [17]

    Zhu D R, Liu X S, Hu F, Menndez J L 2012 Chin. J. Mater. Res. 26 91 (in Chinese) [朱德如, 刘先松, 胡锋,Jose Luis Mendez 2012 材料研究学报26 91]

    [18]

    Zhang L D, Mou J M 2001 Nano Materials and Structures(1st Ed.) (Beijing: Science Press) pp1012 (in Chinese)[张立德, 牟季美2001 纳米材料和纳米结构(第一版)(北京: 科学出版社) 第1012 页]

  • [1]

    Li Y Y, Li G D 1978 Ferrite Physics (1st Ed.) (Beijing: Science Press) pp34-36 (in Chinese) [李荫远, 李国栋 1978 铁氧体物理学(第一版) (北京: 科学出版社) 第34-36页]

    [2]

    Feng J 2002 Acta Phys. Sin. 51 1841 (in Chinese) [冯洁 2002 物理学报 51 1841]

    [3]

    Kuang X D, Qiu S X, Yuan X Z 2013 Baosteel Meishan 34 27 (in Chinese) [匡雪冬, 邱士星, 袁小镇2013 梅山科技34 27]

    [4]

    Sun Y J, Jin M L, Wang Z Y, Jiang H H 2013 J. Synth. Cryst. 42 751 (in Chinese) [孙延杰, 金鸣林, 王占勇, 蒋涵涵2013 人工晶体学报42 751]

    [5]

    Hui Y J 2012 M. S. Dissertation (Wuhan: Huazhong University of Science Technology) (in Chinese) [惠亚娟2012 硕士学位论文(武汉: 华中科技大学)]

    [6]

    Liu X S, Zhu D R, Menndez J L, Ruan Z, Jiang K L, Hu F 2012 2012 Chinese Function of New Materials Forum and the Third National Academic Conference of Electromagnetic Materials and Devices Tunxi, China, October 1824, 2012 p97 (in Chinese) [刘先松, 朱德如, Jose Luis Menndez, 阮征, 蒋坤良, 胡峰2012 2012 中国功能新材料学术论坛暨第三届全国电磁材料及器件学术会议, 中国安徽屯溪, 2012 年10 月18 日24 日, 第97 页]

    [7]

    Liu X S, Jia D N, Hu F, Zhu D R, Menndez J L 2012 Rare Metal Mater. Eng. (Sppl. 2) 41 63 (in Chinese) [刘先松, 贾道宁, 胡锋, 朱德如, Jose Luis Menndez 2012 稀有金属材料与工程41 63]

    [8]

    Zhang Z Y, Liu X X, Wu Y P, Wang X J 2012 Surf. Technol. 41 109 (in Chinese) [张泽洋, 刘祥萱, 吴有朋, 王煊军2012 表面技术41 109]

    [9]

    He X Y, Li Q L, Liu X X 2014 J. Mater. Prot. 47 54 (in Chinese) [何晓勇, 李巧玲, 刘晓霞2014 材料保护47 54]

    [10]

    Yang K, Liu Y L, Li Y X, Pan X Q, Qi W C, Zhang H W 2012 J. Magn. Mater. Devices 44 12 (in Chinese) [杨锴, 刘颖力, 李元勋, 潘忻强, 漆伟成, 张怀武2012 磁性材料及器件44 12]

    [11]

    Wei C Y, Shen X Q, Song F Z 2012 Chin. Phys. B 21 541

    [12]

    Zan F L, Ma Y Q, Zhang X, Ma Q, Zheng G H, Dai Z X 2014 J. Anhui Univ. (Nat. Sci. Ed.) 38 45 (in Chinese)[昝芬莲, 马永青, 张贤, 马倩, 郑赣鸿, 戴振翔2014 安徽大学学报(自然科学版) 38 45]

    [13]

    Garca-Cerda L A, Rodrguez-Fernndez O S, Resndiz-Hernndez P J 2004 J. Alloys. Compd. 369 182

    [14]

    Huang Y, Du C F, Qin X L, He W D 2007 Chin. J.Mater. Res. 21 324 (in Chinese) [黄英, 杜朝锋, 秦秀兰,何文栋2007 材料研究学报21 324]

    [15]

    Huang K, L J G 2009 J. Anqing Teach. Coll. (Nat. Sci.Ed.) 15 67 (in Chinese) [黄凯, 吕建国2009 安庆师范学院学报(自然科学版) 15 67]

    [16]

    Xu J, Dong J F, Xiang W D, Bao Q J 2008 Rare Metal Mater. Eng. 37 463 (in Chinese) [徐键, 董建峰, 向卫东,鲍前君2008 稀有金属材料与工程37 463]

    [17]

    Zhu D R, Liu X S, Hu F, Menndez J L 2012 Chin. J. Mater. Res. 26 91 (in Chinese) [朱德如, 刘先松, 胡锋,Jose Luis Mendez 2012 材料研究学报26 91]

    [18]

    Zhang L D, Mou J M 2001 Nano Materials and Structures(1st Ed.) (Beijing: Science Press) pp1012 (in Chinese)[张立德, 牟季美2001 纳米材料和纳米结构(第一版)(北京: 科学出版社) 第1012 页]

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Publishing process
  • Received Date:  20 October 2014
  • Accepted Date:  04 January 2015
  • Published Online:  05 May 2015

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