用固相烧结工艺制备Ba2NiMoO6陶瓷样品,采用多晶X射线衍射仪和扫描电子显微镜技术对样品的物相成分、晶体结构和晶体表面形貌进行表征与分析.X射线的实验结果表明:Ba2NiMoO6晶体原胞(a=b=c8.045 nm)属于立方晶系,空间群为Pm3m(No.221),布拉格衍射峰(111)和(311)为样品中Ni离子和Mo离子有序占据B位超晶格有序峰.振动样品磁强计(VSM)测量室温样品磁化强度与磁场强度关系,表明样品在室温下呈现顺磁行为.由电子顺磁共振(ESR)测量样品的室温吸收曲线,可以计算出朗德因子(g=1.3).
参考文献
| [1] | Kobayashi K I et al.Rcom-temperature material with an orde-red double-perovskite structure[J].Nature,1998,395:677. |
| [2] | 韩红梅,王锦辉,钟伟,都有为.磁性双钙钛矿材料的研究进展[J].功能材料,2001(06):568-571. |
| [3] | Chan TS;Liu RS;Hu SF;Lin JG .Structure and physical properties of double perovskite compounds Sr2FeMO6 (M = MO, W)[J].Materials Chemistry and Physics,2005(2/3):314-319. |
| [4] | Dinia A;Venuat J;Colis S et al.Elaboration and character-ization of the Sr2FeMoO6 doubleperovskite[J].Catalysis Today,2004,89:297. |
| [5] | Yuan C L;Wang S G;SOng W H et al.Enhanced intergrain tunneling magnetoresistance indouble perovskite Sr2FeMoO6 poly-crystals with nanometer-sca]e particles[J].Applied Physics Letters,1999,75:3853. |
| [6] | Maignan A;Raveau B;Martin C et al.Large intragrain mag-netoresistance adove room temperature in the doule perovskite Ba2FeMoO6[J].Journal of Solid State Chemistry,1999,144:224. |
| [7] | Sung Baek Kim;Bo Wha Lee;Sung Ro Yoon .Anisotropic hyperfine field fluctuation in Ba_2FeMoO_6[J].Journal of Magnetism and Magnetic Materials,2003(0):580-582. |
| [8] | de Francisco C.;Zazo M.;Flores AG.;Iniguez J.;Torres L.;Munoz JM. .Magnetic aftereffect and electrical conductivity in double perovskite Ba2FeMoO6[J].Journal of Applied Physics,2001(11 Pt.2):7642-7644. |
| [9] | Kim J;Sung J G;Yang H M et al.Effects of carrier doping ou Curie temperature indouble perovskite Ba2FeMoO6[J].Journal of Magnetism and Magnetic Materials,2005,290-291:1009. |
| [10] | 田宏伟,胡小颖,郑伟涛.钙钛矿锰氧化物Y0.5Ca0.5Mn0.8Fe0.2O3的电子顺磁共振研究[J].稀有金属,2005(05):725-727. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%