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外延BaMoO3, BaMoO4薄膜的生长行为

戚炜恒 王震 李翔飞 禹日成 王焕华

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外延BaMoO3, BaMoO4薄膜的生长行为

戚炜恒, 王震, 李翔飞, 禹日成, 王焕华

Growth behaviors of epitaxial barium molybdate (BaMoO3, BaMoO4) film

Qi Wei-Heng, Wang Zhen, Li Xiang-Fei, Yu Ri-Cheng, Wang Huan-Hua
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  • 在4d过渡族金属氧化物AMoO3 (A = Ca, Sr, Ba)中, BaMoO3是唯一没有外延薄膜相关研究报导的材料. 本文以BaMoO3多晶陶瓷为靶材, 利用脉冲激光沉积技术得到了高质量的BaMoO3和BaMoO4外延薄膜; 分析了氧分压在薄膜生长中的作用, 发现BaMoO3的外延生长对氧分压极为敏感. 通过氧分压调制实验, 在SrTiO3 (111)衬底上发现了一种BaMoO3参与的自组装超晶格结构, 对其进行了结构表征和初步分析, 并从脉冲激光沉积制备钙钛矿薄膜的动力学角度对该结构的形成进行了讨论; 最后对本系列外延膜进行了电输运性质的表征, 结果显示在SrTiO3 (001)衬底上的外延BaMoO3薄膜有着更好的导电性.
    Transition metal oxides have been a research hotspot for basic scientific research and frontier applications. Owing to the presence of d electrons and strong electron correlation, a wealth of physical phenomena emerges in the transition metal oxide family. In particular, extremely fruitful research progress is achieved in a 3d orbital elemental system. In comparison, the 4d transition metal oxides need more attention. Molybdate has excellent optical and electrical properties. Among AMoO3 (A = Ca, Sr, Ba), only BaMoO3 has not been reported for epitaxial films to date. In this work, high-quality epitaxial films of BaMoO3 and BaMoO4 are prepared by using the pulsed laser deposition. We conduct the oxygen partial pressure modulation experiments and the results show that the growth of BaMoO3 is sensitive to oxygen partial pressure. Also, BaMoO3 has a geometrically similar lattice structure to BaMoO4, and there exists epitaxial competition between BaMoO3 and BaMoO4. These two points make the preparation of epitaxial BaMoO3 films more challenging. The key to the preparation of epitaxial BaMoO3 thin films is the reduced laser target material, high vacuum environment, and ultra-low oxygen partial pressure. The epitaxy competition can be avoided by using the SrTiO3 (111) substrate. We conduct oxygen partial pressure modulation experiments on a narrow scale and reveal a self-assembled superlattice of epitaxial BaMoO3 film on a SrTiO3(111) substrate. Both the satellite peaks in the XRD pattern and the HRTEM results indicate the superlattice period of about 7.04 Å. The oxygen partial pressure is the only parameter that regulates this phenomenon, so we presume that the essence of the self-assembled superlattice is periodic oxygen-induced lattice defects. Finally, electrical transport characterization experiments are conducted on representative BaMoO3 films. The $\rho \text{-} T$ curve measurements and fitting results show that the epitaxial BaMoO3 films on SrTiO3(001) substrates have better conductivities. The electrical transport properties of BaMoO3 films grown on SrTiO3(111) substrates are dominated by electron-phonon scattering, and BaMoO3 films grown on SrTiO3(001) substrate have stronger electron-electron scattering interactions. The resistivity of the self-assembled superlattice BaMoO3 films is relatively high and electron-electron scattering plays an important role in determining the electrical transport property.
      通信作者: 王焕华, wanghh@ihep.ac.cn
    • 基金项目: 中国科学院国际合作局国际伙伴计划项目(批准号: 113111KYSB20190052)资助的课题
      Corresponding author: Wang Huan-Hua, wanghh@ihep.ac.cn
    • Funds: Project supported by the International Partnership Program, Bureau of International Cooperation Chinese Academy of Sciences, China (Grant No. 113111KYSB20190052)
    [1]

    Cox P A 2010 Transition Metal Oxides: an Introduction to Their Electronic Structure and Properties (Vol. 27) (Oxford: Oxford University Press) pp1–35

    [2]

    Maeno Y, Hashimoto H, Yoshida K, Nishizaki S, Fujita T, Bednorz J, Lichtenberg F 1994 Nature 372 532Google Scholar

    [3]

    Nakatsuji S, Ikeda S I, Maeno Y 1997 J. Phys. Soc. Jpn. 66 1868Google Scholar

    [4]

    Zhang J, McLeod A S, Han Q, Chen X, Bechtel H A, Yao Z, Corder S G, Ciavatti T, Tao T H, Aronson M 2019 Phys. Rev. X 9 011032

    [5]

    Nobukane H, Yanagihara K, Kunisada Y, Ogasawara Y, Isono K, Nomura K, Tanahashi K, Nomura T, Akiyama T, Tanda S 2020 Sci. Rep. 10 3462

    [6]

    He T, Cava R 2001 Phys. Rev. B 63 172403Google Scholar

    [7]

    Radetinac A, Mani A, Melnyk S, Nikfalazar M, Ziegler J, Zheng Y, Jakoby R, Alff L, Komissinskiy P 2014 Appl. Phys. Lett. 105 114108

    [8]

    Mizoguchi H, Fukumi K, Kitamura N, Takeuchi T, Hayakawa J, Yamanaka H, Yanagi H, Hosono H, Kawazoe H 1999 J. Appl. Phys. 85 6502

    [9]

    Nagai I, Shirakawa N, Ikeda S I, Iwasaki R, Nishimura H, Kosaka M 2005 Appl. Phys. Lett. 87 024105Google Scholar

    [10]

    Radetinac A, Takahashi K S, Alff L, Kawasaki M, Tokura Y 2010 Appl. Phys. Express 3 073003

    [11]

    Ha Y, Lee S 2020 Adv. Funct. Mater. 30 2001489Google Scholar

    [12]

    Hayashi S, Aoki R, Nakamura T 1979 Mater. Res. Bull. 14 409

    [13]

    Kurosaki K, Oyama T, Muta H, Uno M, Yamanaka S 2004 J. Alloys Compd. 372 65Google Scholar

    [14]

    Ma T, Jacobs R, Booske J, Morgan D 2021 J. Mater. Chem. C 9 12778

    [15]

    Panchal V, Garg N, Sharma S M 2006 J. Phys. Condens. Matter 18 3917Google Scholar

    [16]

    Guo D, Yang Q, Hua H, Hu C 2014 J. Phys. Chem. C 118 13826Google Scholar

    [17]

    Ray S K, Kshetri Y K, Lee S W 2019 Nanotechnology 30 454002Google Scholar

    [18]

    Marques A P A, Picon F C, Melo D, Pizani P S, Leite E R, Varela J A, Longo E 2008 J. Fluoresc. 18 51Google Scholar

    [19]

    Kamata K, Nakamura T, Sata T 1975 Mater. Res. Bull. 10 373

    [20]

    Hegde M 2001 J. Chem. Sci. 113 445Google Scholar

    [21]

    Nassif V, Carbonio R E, Alonso J A 1999 J. Solid State Chem. 146 266

    [22]

    Ting X W, Chun Y, Ping H, Guo P Z, Yan R L 2009 Chin. J. Inorg. Chem. 25 1414

  • 图 1  (a) 氧分压调制样品的沿着STO[00L]$\theta\text{—}2\theta$联动扫描XRD结果; (b) 沿界面法向观察的STO (001)上外延生长BaMoO3薄膜示意图; (c) STO (001)上外延生长BaMoO3薄膜的立体示意图; (d) 沿界面法向观察的STO (001)上外延生长BaMoO4薄膜示意图; (e) STO (001)上外延生长BaMoO4薄膜的立体示意图

    Fig. 1.  (a) Out of plane $\theta-2\theta$ scan along STO [00L] of samples which were prepared at different oxygen partial pressure; (b) schematic diagram of epitaxial BaMoO3 film on STO (001) substrate observed along normal direction of the heterointerface; (c) three-dimensional schematic diagram of epitaxial BaMoO3 film on STO (001) substrate; (d) schematic diagram of epitaxial BaMoO4 film on STO (001) substrate observed along normal direction of heterointerface; (e) three-dimensional schematic diagram of epitaxial BaMoO4 film on STO (001) substrate.

    图 2  (a) 高质量BaMoO3和 (b) BaMoO4外延膜沿STO [00L] $\theta\text{—}2\theta$联动扫描XRD结果; (c) BaMoO3在STO (103)倒易点附近的RSM图谱; (d) BaMoO4 (112)倒易点附近的RSM图谱

    Fig. 2.  Out of plane $\theta-2\theta$ scan along STO [00L] of high quality (a) BaMoO3 and (b) BaMoO4 films; (c) reciprocal space mapping of BaMoO3 near the STO (103); (d) reciprocal space mapping of BaMoO4 (112)

    图 3  氧分压调制实验下STO (111)衬底上纯相BaMoO3, 自组装超晶格BaMoO3, 非晶BaMoO3的XRD结果

    Fig. 3.  XRD pattern of BaMoO3 film, self-assembled superlattice BaMoO3 film, amorphous BaMoO3 film on STO (111) substrate under oxygen partial pressure modulation

    图 4  (a) BaMoO4/STO (001)的HAADF图像; (b) 自组装超晶格BaMoO3/STO (111)的HRTEM图像

    Fig. 4.  (a) HAADF imaging of BaMoO4/STO (001); (b) HRTEM imaging of self-assembled superlattice BaMoO3/STO (111)

    图 5  BaMoO3薄膜的$\rho \text{-}T$曲线测量与拟合结果 (a) BaMoO3/STO(001), BaMoO3/STO(111)和自组装超晶格BaMoO3/STO(111)的$\rho \text{-} T$曲线测量结果; (b) BaMoO3/STO(001), (c) BaMoO3/STO(111)和(d)自组装超晶格BaMoO3/STO(111)的$\rho \text{-} T$曲线拟合结果

    Fig. 5.  $\rho \text{-} T$ curve measurement and fitting results of BaMoO3 films. (a) $\rho \text{-} T$ curve measurement results of BaMoO3/STO (001), BaMoO3/STO (111), and self-assembled superlattice BaMoO3/STO(111); $\rho \text{-} T$ curve fitting results of (b) BaMoO3/STO (001), (c) BaMoO3/STO (111), and (d) self-assembled superlattice BaMoO3/STO(111)

    图 A1  自组装超晶格BaMoO3的球差校正ABF图像

    Fig. A1.  Spherical aberration-corrected ABF of self-assembled superlattice BaMoO3

    表 1  外延BaMoO3和BaMoO4最优生长条件

    Table 1.  Optimal growth conditions for epitaxial BaMoO3 and BaMoO4 thin film.

    主要参数BaMoO3薄膜BaMoO4薄膜
    衬底温度/℃650600
    激光波长/nm248 248
    聚焦后激光能量密度/(J·cm–2)1.21.5
    激光频率/Hz2 2
    靶材衬底距离/mm65 65
    氧分压/Pa$\ll 3\times 10^{-5}$$2.2\times 10^{-3}$
    下载: 导出CSV
  • [1]

    Cox P A 2010 Transition Metal Oxides: an Introduction to Their Electronic Structure and Properties (Vol. 27) (Oxford: Oxford University Press) pp1–35

    [2]

    Maeno Y, Hashimoto H, Yoshida K, Nishizaki S, Fujita T, Bednorz J, Lichtenberg F 1994 Nature 372 532Google Scholar

    [3]

    Nakatsuji S, Ikeda S I, Maeno Y 1997 J. Phys. Soc. Jpn. 66 1868Google Scholar

    [4]

    Zhang J, McLeod A S, Han Q, Chen X, Bechtel H A, Yao Z, Corder S G, Ciavatti T, Tao T H, Aronson M 2019 Phys. Rev. X 9 011032

    [5]

    Nobukane H, Yanagihara K, Kunisada Y, Ogasawara Y, Isono K, Nomura K, Tanahashi K, Nomura T, Akiyama T, Tanda S 2020 Sci. Rep. 10 3462

    [6]

    He T, Cava R 2001 Phys. Rev. B 63 172403Google Scholar

    [7]

    Radetinac A, Mani A, Melnyk S, Nikfalazar M, Ziegler J, Zheng Y, Jakoby R, Alff L, Komissinskiy P 2014 Appl. Phys. Lett. 105 114108

    [8]

    Mizoguchi H, Fukumi K, Kitamura N, Takeuchi T, Hayakawa J, Yamanaka H, Yanagi H, Hosono H, Kawazoe H 1999 J. Appl. Phys. 85 6502

    [9]

    Nagai I, Shirakawa N, Ikeda S I, Iwasaki R, Nishimura H, Kosaka M 2005 Appl. Phys. Lett. 87 024105Google Scholar

    [10]

    Radetinac A, Takahashi K S, Alff L, Kawasaki M, Tokura Y 2010 Appl. Phys. Express 3 073003

    [11]

    Ha Y, Lee S 2020 Adv. Funct. Mater. 30 2001489Google Scholar

    [12]

    Hayashi S, Aoki R, Nakamura T 1979 Mater. Res. Bull. 14 409

    [13]

    Kurosaki K, Oyama T, Muta H, Uno M, Yamanaka S 2004 J. Alloys Compd. 372 65Google Scholar

    [14]

    Ma T, Jacobs R, Booske J, Morgan D 2021 J. Mater. Chem. C 9 12778

    [15]

    Panchal V, Garg N, Sharma S M 2006 J. Phys. Condens. Matter 18 3917Google Scholar

    [16]

    Guo D, Yang Q, Hua H, Hu C 2014 J. Phys. Chem. C 118 13826Google Scholar

    [17]

    Ray S K, Kshetri Y K, Lee S W 2019 Nanotechnology 30 454002Google Scholar

    [18]

    Marques A P A, Picon F C, Melo D, Pizani P S, Leite E R, Varela J A, Longo E 2008 J. Fluoresc. 18 51Google Scholar

    [19]

    Kamata K, Nakamura T, Sata T 1975 Mater. Res. Bull. 10 373

    [20]

    Hegde M 2001 J. Chem. Sci. 113 445Google Scholar

    [21]

    Nassif V, Carbonio R E, Alonso J A 1999 J. Solid State Chem. 146 266

    [22]

    Ting X W, Chun Y, Ping H, Guo P Z, Yan R L 2009 Chin. J. Inorg. Chem. 25 1414

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出版历程
  • 收稿日期:  2022-04-18
  • 修回日期:  2022-05-11
  • 上网日期:  2022-08-12
  • 刊出日期:  2022-09-05

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