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Cu1-x Cox InTe2稀磁半导体的制备及磁学、光学性质

王京南 郭永权 殷林瀚 赵兴 郭新鹏 解娜娜

王京南, 郭永权, 殷林瀚, 赵兴, 郭新鹏, 解娜娜. Cu1-x Cox InTe2稀磁半导体的制备及磁学、光学性质[J]. 华南师范大学学报(自然科学版), 2022, 54(2): 1-6. doi: 10.6054/j.jscnun.2022018
引用本文: 王京南, 郭永权, 殷林瀚, 赵兴, 郭新鹏, 解娜娜. Cu1-x Cox InTe2稀磁半导体的制备及磁学、光学性质[J]. 华南师范大学学报(自然科学版), 2022, 54(2): 1-6. doi: 10.6054/j.jscnun.2022018
WANG Jingnan, GUO Yongquan, YIN Linhan, ZHAO Xing, GUO Xinpeng, XIE Nana. The Preparation and Magnetic and Optical Properties of Cu1-xCoxInTe2 Diluted Magnetic Semiconductor[J]. Journal of South China normal University (Natural Science Edition), 2022, 54(2): 1-6. doi: 10.6054/j.jscnun.2022018
Citation: WANG Jingnan, GUO Yongquan, YIN Linhan, ZHAO Xing, GUO Xinpeng, XIE Nana. The Preparation and Magnetic and Optical Properties of Cu1-xCoxInTe2 Diluted Magnetic Semiconductor[J]. Journal of South China normal University (Natural Science Edition), 2022, 54(2): 1-6. doi: 10.6054/j.jscnun.2022018

Cu1-x Cox InTe2稀磁半导体的制备及磁学、光学性质

doi: 10.6054/j.jscnun.2022018
基金项目: 

国家重点研发项目 2018YFB0905600

详细信息
    通讯作者:

    郭永权,Email: yqguo@ncepu.edu.cn

  • 中图分类号: TB34

The Preparation and Magnetic and Optical Properties of Cu1-xCoxInTe2 Diluted Magnetic Semiconductor

  • 摘要: 采用真空电弧熔炼技术制备Cu1-xCoxInTe2(Co元素掺杂比x=0, 0.1, 0.2, 0.3)稀磁半导体。利用X射线衍射仪(XRD)、振动样品磁强计(VSM)和紫外可见近红外分光光度计(UV-Vis-NIR)分别表征样品的晶体结构、磁学性质和光学性质。研究表明:4种稀磁半导体中主相均为Cu1-xCoxInTe2,具有四方结构,空间群为I42d。掺杂的Co原子与Cu原子共同占据4a(0, 0, 0)晶位,In原子占据4b(0, 0, 1/2)晶位,Te原子占据8d(x, 1/4, 1/8)晶位。Cu1-xCoxInTe2呈现室温铁磁性,其室温磁化遵循Langevin模型,随着x的增加,其饱和磁化强度增大。调控Co掺杂量,可以提高Cu1-xCoxInTe2稀磁半导体的光吸收带宽Eg,使其具有太阳能光伏材料的应用可能性。
  • 图  1  Cu1-xCoxInTe2(x=0, 0.1, 0.2, 0.3)稀磁半导体的XRD图谱

    Figure  1.  The XRD patterns of Cu1-xCoxInTe2(x=0, 0.1, 0.2, 0.3) diluted magnetic semiconductors

    图  2  Cu0.8Co0.2InTe2的XRD精修图谱

    Figure  2.  The refined XRD pattern of Cu0.8Co0.2InTe2

    图  3  Cu1-xCoxInTe2(x=0.1, 0.2, 0.3)室温磁化曲线

    Figure  3.  The magnetization curves of Cu1-xCoxInTe2(x=0.1, 0.2, 0.3) at room temperature

    图  4  Cu1-xCoxInTe2稀磁半导体的吸收光谱

    Figure  4.  The absorption spectra of Cu1-xCoxInTe2 diluted magnetic semiconductors

    图  5  Cu1-xCoxInTe2稀磁半导体的(αhν)2-()曲线

    Figure  5.  The (αhν)2-() curves of Cu1-xCoxInTe2 diluted magnetic semiconductors

    表  1  Cu0.8Co0.2InTe2衍射峰的指标化结果

    Table  1.   The index-results of diffraction peaks in Cu0.8Co0.2InTe2

    h k l sin2θ实验值 sin2θ计算值 2θ实验值 2θ计算值
    1 1 2 0.046 334 0.046 318 24.861 24.857
    1 0 3 0.050 145 0.050 108 25.880 25.870
    2 0 0 0.061 841 0.061 838 28.799 28.798
    2 1 3 0.111 966 0.111 946 39.098 39.094
    2 2 0 0.123 564 0.123 676 41.160 41.180
    3 0 1 0.143 007 0.142 985 44.440 44.436
    3 1 2 0.170 001 0.169 994 48.700 48.699
    3 2 3 0.235 612 0.235 622 58.077 58.079
    4 0 0 0.247 283 0.247 352 59.640 59.649
    2 1 7 0.265 932 0.265 941 62.087 62.088
    4 1 1 0.266 789 0.266 661 62.198 62.181
    3 1 6 0.293 302 0.293 190 65.582 65.568
    3 2 5 0.297 133 0.297 220 66.063 66.074
    3 0 7 0.327 838 0.327 779 69.859 69.852
    4 2 4 0.370 780 0.370 788 75.022 75.023
    5 0 1 0.390 275 0.390 337 77.323 77.331
    注:M(18)=36,F(18)=22。
    下载: 导出CSV

    表  2  Cu1-xCoxInTe2稀磁半导体中主相点阵常数及晶胞体积

    Table  2.   The lattice constants and cell volumes of main phase in Cu1-xCoxInTe2 diluted semiconductors magnetic

    参数 CuInTe2 Cu0.9Co0.1InTe2 Cu0.8Co0.2InTe2 Cu0.7Co0.3InTe2
    a/nm 0.619 2(1) 0.619 1(9) 0.619 5(1) 0.619 2(0)
    c/nm 1.240 6(1) 1.240 6(3) 1.241 4(4) 1.240 7(4)
    V/nm3 0.475 657 0.475 503 0.476 425 0.475 695
    F 32(17) 19(16) 36(18) 18(18)
    M 19(17) 11(16) 22(18) 12(18)
    下载: 导出CSV

    表  3  Cu1-xCoxInTe2稀磁半导体的Rietveld精修结果

    Table  3.   The Rietveld-refined results of Cu1-xCoxInTe2 diluted magnetic semiconductors

    参数 CuInTe2 Cu0.9Co0.1InTe2 Cu0.8Co0.2InTe2 Cu0.7Co0.3InTe2
    a/nm 0.619 1(3) 0.619 3(4) 0.619 2(7) 0.619 2(1)
    c/nm 1.240 7(0) 1.241 2(9) 1.241 0(0) 1.240 7(1)
    V/nm3 0.475 5(9) 0.476 1(4) 0.475 9(2) 0.475 7(1)
    Cu(4a)或Co(4a)坐标 (0, 0, 0) (0, 0, 0) (0, 0, 0) (0, 0, 0)
    In(4b)坐标 (0, 0, 1/2) (0, 0, 1/2) (0, 0, 1/2) (0, 0, 1/2)
    Te(8d)坐标 (0.225 46, 1/4, 1/8) (0.221 29, 1/4, 1/8) (0.222 29, 1/4, 1/8) (0.210 68, 1/4, 1/8)
    Rwp/% 9.919 10.877 17.463 19.919
    Rp/% 7.374 7.491 10.989 12.224
    下载: 导出CSV

    表  4  Cu1-xCoxInTe2在室温下的磁化曲线拟合结果

    Table  4.   The magnetization curve fitting results of Cu1-xCoxInTe2 at room temperature

    样品 MS/(emu·g-1) R2
    Cu0.9Co0.1InTe2 2.929 18±0.003 67 0.986 44
    Cu0.8Co0.2InTe2 4.044 37±0.005 68 0.982 38
    Cu0.7Co0.3InTe2 7.112 56±0.007 73 0.990 54
    下载: 导出CSV
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  • 收稿日期:  2021-09-23
  • 网络出版日期:  2022-05-12
  • 刊出日期:  2022-04-25

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