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利用固态反应法制备了名义成分为FeTe的合金, 采用X射线粉末衍射技术和Rietveld全谱拟合分析方法测定了其相组成和晶体结构. 研究表明,主相为Fe1.08Te,空间群为P4/nmm,点阵参数 a = 3.8214(3) Å, c = 6.2875(3) Å, Z = 2, Fe原子占据2a和2c晶位, Te原子占据2c晶位. 利用脉冲激光沉积技术制备的FeTe薄膜超导转变起始温度为13.2 K,零电阻温度为9.8 K.
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关键词:
- FeTe /
- Rietveld结构精修 /
- 超导薄膜
The vacuum sintered alloy with nominal composition of FeTe was analyzed using powder X-ray diffraction and refined with Rietveld method. It is shown that FeTe alloy crystallizes a tetragonal structure with space group of P/4nmm and its lattice constant is a = 3.8214(3)Å, c = 6.2875(3) Å, Z = 2. Fe at 2a and 2c positions and Te at 2c positions. FeTe films prepared by pulsed laser deposition showed superconducting transition with starting transition temperature Tc,onset of 13.2 K and Tc,0 of 9.8 K.-
Keywords:
- FeTe /
- Rietveld refinement /
- superconducting films
[1] Kamihara Y, Hiramatsu H, Hirano M, Kawamura R, Yanagi H, Kamiya T, Hosono H 2006 J. Am. Chem. Soc. 128 10012
[2] Ishida K, Nakai Y, Hosono H 2009 J. Phys. Soc. Jpn. 78 062001
[3] Hsu F C, Luo J Y, Yeh K W, Chen T K, Huang T W, Wu P M, Lee Y C, Huang Y L, Chu Y Y, Yan D C, Wu M K 2008 Proc. Natl. Acad. Sci. U. S. A. 105 1422
[4] Mizuguchi Y, Tomioka F, Tsuda S, Yamaguchi T, Takano Y 2008 Appl. Phys. Lett. 93 152505
[5] Subedi A, Zhang L, Singh D J, Du M H 2008 Phys. Rev. B 78 134514
[6] FangMH, Pham H M, Qian B, Liu T J, Vehstedt E K, Liu Y, Spinu L, Mao Z Q 2008 Phys. Rev. B 78 224503
[7] Yeh K W, Huang T W, Huang Y L, Chen T K, Hsu F C, Wu P M, Lee Y C, Chu Y Y, Chen C L, Luo J Y, Yan D C, Wu M K 2008 Europhys. Lett. 84 37002
[8] Mizuguchi Y, Tomioka F, Tsuda S, Yamaguchi T, Takano Y 2009 Appl. Phys. Lett. 94 012503
[9] Mizuguchi Y, Tomioka F, Tsuda S, Yamaguchi T, Takano Y 2009 Physica C 469 1027
[10] Okada H, Takahashi H, MIzuguchi Y, Takano Y 2009 J. Phys. Soc. Jpn. 78 083709
[11] Patel U, Hua J, Yu S H, Avci S, Xiao Z L, Claus H, Schlueter J, Vlasko-Vlasov V V, Welp U, Kwok W K 2009 Appl. Phys. Lett. 94 082508
[12] Han Y, Li W Y, Cao L X, Zhang S, Xu B, Zhao B R 2009 J. Phys. Condes. Matter 21 235702
[13] Yu H F, Zhang L S, Wu X H, Guo Y Q 2011 Acta Phys. Sin. 60 107306 (in Chinese) [于洪飞,张鲁山,吴小会,郭永权 2010 60 107306]
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[1] Kamihara Y, Hiramatsu H, Hirano M, Kawamura R, Yanagi H, Kamiya T, Hosono H 2006 J. Am. Chem. Soc. 128 10012
[2] Ishida K, Nakai Y, Hosono H 2009 J. Phys. Soc. Jpn. 78 062001
[3] Hsu F C, Luo J Y, Yeh K W, Chen T K, Huang T W, Wu P M, Lee Y C, Huang Y L, Chu Y Y, Yan D C, Wu M K 2008 Proc. Natl. Acad. Sci. U. S. A. 105 1422
[4] Mizuguchi Y, Tomioka F, Tsuda S, Yamaguchi T, Takano Y 2008 Appl. Phys. Lett. 93 152505
[5] Subedi A, Zhang L, Singh D J, Du M H 2008 Phys. Rev. B 78 134514
[6] FangMH, Pham H M, Qian B, Liu T J, Vehstedt E K, Liu Y, Spinu L, Mao Z Q 2008 Phys. Rev. B 78 224503
[7] Yeh K W, Huang T W, Huang Y L, Chen T K, Hsu F C, Wu P M, Lee Y C, Chu Y Y, Chen C L, Luo J Y, Yan D C, Wu M K 2008 Europhys. Lett. 84 37002
[8] Mizuguchi Y, Tomioka F, Tsuda S, Yamaguchi T, Takano Y 2009 Appl. Phys. Lett. 94 012503
[9] Mizuguchi Y, Tomioka F, Tsuda S, Yamaguchi T, Takano Y 2009 Physica C 469 1027
[10] Okada H, Takahashi H, MIzuguchi Y, Takano Y 2009 J. Phys. Soc. Jpn. 78 083709
[11] Patel U, Hua J, Yu S H, Avci S, Xiao Z L, Claus H, Schlueter J, Vlasko-Vlasov V V, Welp U, Kwok W K 2009 Appl. Phys. Lett. 94 082508
[12] Han Y, Li W Y, Cao L X, Zhang S, Xu B, Zhao B R 2009 J. Phys. Condes. Matter 21 235702
[13] Yu H F, Zhang L S, Wu X H, Guo Y Q 2011 Acta Phys. Sin. 60 107306 (in Chinese) [于洪飞,张鲁山,吴小会,郭永权 2010 60 107306]
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