以氧化物Y_2O_3、Fe_2O_3、Bi_2O_3、V_2O_5、CaCO_3为原料,采用固相反应法制备了Y_(1.05)Bi_(0.75)Ca_(1.2)Fe_(4.4)V_(0.6)O_(12)(Bi-CVG)铁氧体材料.通过XRD、SEM和MATS等方法考察了不同烧结温度、保温时间对产物体积密度、晶体结构、形貌和磁性能的影响.结果表明,选择适当的保温时间可以有效提高铁氧体的密度;烧结温度对相稳定性和磁性能影响显著.当烧结条件为1100℃与6h时,所制备的Bi-CVG样品属于体心立方晶系,且粒度大小分布比较均匀,结构致密.该样品磁性能良好,平均晶粒尺寸约为2μm,密度为5.20g/cm~3;主要磁特性为剩磁Br=24.57mT,矫顽力Hc=764.4A/m,饱和磁化强度4πMs=343.2×10~(-4)T.
Y_(1.05)Bi_(0.75)Ca_(1.2)Fe_(4.4)V_(0.6)O_(12)(Bi-CVG)ferrite material was prepared by solid-state reaction using Y_2O_3、Fe_2O_3、Bi_2O_3、V_2O_5、CaCO_3 as raw materials.The effect of sintering temperature and time on the bulk density,structure,morphology and magnetic properties were investigated by XRD,SEM and MATS.The results show that appropriate sintering time can effectively increase the density of ferrite,and the sintering temperature has significant effect on the stability of YIG and magnetic properties.The sample prepared at 1100℃for 6h has a body-centered cubic structure with homogenous distribution of grain sizes and densification structure.The average grain size of the sample is about 2μm,the bulk density ρ=5.21g/cm~3,and the main magnetic parameters are Br=24.57mT,Hc=764.4A/m,4πMs=343.2×10~(-4)T.
参考文献
| [1] | Hsiao-Miin Sung;Chi-Jen Chen .Fine powder ferrite for multilayer chip inductors[J].IEEE Transactions on Magnetics,1994(6):4906-4908. |
| [2] | 姚学标,胡国光,尹萍.一种优良旋磁特性的钇钆复合石榴石铁氧体[J].功能材料,2000(03):267. |
| [3] | Qinghui Yang;Huaiwu Zhang;Yingli Liu;Qiye Wen;Lijun Jia .The magnetic and dielectric properties of microwave sintered yttrium iron garnet (YIG)[J].Materials Letters,2008(17/18):2647-2650. |
| [4] | Yen-Pei Fu;Dung-Shing Hung;Chih-Wen Cheng .Non-isothermal crystallization kinetics and microwave properties of Bi_(0.75)Y_(2.25)Fe_5O_(12) prepared by coprecipitation[J].CERAMICS INTERNATIONAL,2009(2):559-564. |
| [5] | Garskaite E;Gibson K;Leleckaite A;Glaser J;Niznansky D;Kareiva A;Meyer HJ .On the synthesis and characterization of iron-containing garnets (Y3Fe5O12, YIG and Fe3Al5O12, IAG)[J].Chemical Physics: A Journal Devoted to Experimental and Theoretical Research Involving Problems of Both a Chemical and Physical Nature,2006(2-3):204-210. |
| [6] | 杨辉,张启龙.低温共烧微波介质陶瓷及其器件的研究进展[J].硅酸盐学报,2008(06):866-876. |
| [7] | Y.F. Chen;K.T. Wu;YD. Yao;C.H. Peng;K.L. You;W.S. Tse .The influence of Fe concentration on Y_3Al_(5-x)Fe_xO_(12) garnets[J].Microelectronic engineering,2005(2/4):329-335. |
| [8] | Tsay CY.;Liu CY.;Liu KS.;Lin IN.;Hu LJ.;Yeh TS. .Low temperature sintering of microwave magnetic garnet materials[J].Journal of Magnetism and Magnetic Materials,2002(1/3):490-494. |
| [9] | Hongjie Zhao;Ji Zhou;Yang Bai .Effect of Bi-substitution on the dielectric properties of polycrystalline yttrium Iron garnet[J].Journal of Magnetism and Magnetic Materials,2004(2/3):208-213. |
| [10] | A. Kianvash;R. Arghavanian;S. Zakerifar .The effect of TiO_2 addition on the microstructure and magnetic properties of Bi-CVG material[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2008(1/2):432-435. |
| [11] | Tsay CY;Lin CK;Cheng HC;Liu KS;Lin IN .Low temperature sintering and magnetic properties of garnet microwave magnetic materials[J].Materials Chemistry and Physics,2007(2/3):408-413. |
| [12] | 洪向东 .低温烧结制备微波YIG铁氧体及其性能研究[D].西安建筑科技大学,2008. |
| [13] | Hee-Cheol Kang;Dae-Kyoo Jun;Bo Jin;En Mei Jin;Kyung-Hee Park;Hal-Bon Gu;Ki-Won Kim .Optimized solid-state synthesis of LiFePO_4 cathode materials using ball-milling[J].Journal of Power Sources,2008(1):340-346. |
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