欢迎登录材料期刊网

材料期刊网

高级检索

在玻璃衬底上用sol-gel方法制备了具有室温铁磁性的Zn0.88Co0.12O薄膜,X射线衍射(XRD)和紫外可见透射谱(UV-vis)证明Co2+ 替代Zn2+ 掺入了ZnO的晶格中.随退火温度的升高,光致发光谱(PL)中紫外发光峰增强,缺陷相关的可见光辐射减弱.用振动样品磁强计(VSM)对其磁性进行了表征.分析表明,薄膜室温铁磁性源于替位的Co离子,而非形成了第二相,其磁性强弱与退火处理制度有关,取决于替位的Co2+ 和缺陷引起的载流子之间的耦合程度.

参考文献

[1] Ohno H .[J].Science,1998,281:951.
[2] Dietl T;Ohno H;Matsukura F et al.[J].Science,2000,287:1019.
[3] Sato K;Katayama-Yoshida H .[J].Japanese Journal of Applied Physics,2001,40:485.
[4] Ueda K;Tabata H;KaWai T .[J].Applied Physics Letters,2001,79:988.
[5] Jung S W;An S J;Yi G C et al.[J].Applied Physics Letters,2002,80:4561.
[6] Savchuk A I;Gorley P N et al.[J].Materials Science and Engneeringg B,2004,109:196-199.
[7] Wakano T;Fujimura N et al.[J].Physica C,2001,10:260.
[8] Venkatesan M;Fitzgerald C B et al.[J].Physical Review Letters,2004,93:177206.
[9] Chen W;Zhao L F et al.[J].Applied Physics Letters,2005,87:042507.
[10] Ramachandran S;Tiwari A;Narayan J .[J].Applied Physics Letters,2004,84:5255.
[11] Deka S;Joy P A .[J].Applied Physics Letters,2006,89:032508.
[12] Liu X C;Shi E W;Chen Z Z et al.[J].Applied Physics Letters,2006,88:252503.
[13] Siddheswaran R;Sankar R;Babu MR;Rathnakumari M;Jayavel R;Murugakoothan P;Sureshkumar P .Preparation and characterization of ZnO nanofibers by electrospinning[J].Crystal Research and Technology: Journal of Experimental and Industrial Crystallography,2006(5):446-449.
[14] Qi Z M;Li A X;Su F L et al.[J].Materials Research Bulletin,2003,38:1791-1796.
[15] Vanheusden K.;Seager CH.;Tallant DR.;Voigt JA.;Gnade BE.;Warren WL. .MECHANISMS BEHIND GREEN PHOTOLUMINESCENCE IN ZNO PHOSPHOR POWDERS[J].Journal of Applied Physics,1996(10):7983-7990.
[16] Schwartz D A;Gamelin D R .[J].Advanced Materials,2004,16:2115.
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:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%