掺杂SrCoO3-δ薄膜的磁性及电致电阻效应研究
Study on Magnetic Properties and Electroresistance Effect of Doped SrCoO3-δ Thin Films
DOI: 10.12677/app.2026.163019, PDF,    国家自然科学基金支持
作者: 陈盈如, 叶 颖, 叶煜彤, 张裕祥, 叶晴莹, 王 彤, 陈水源*：福建师范大学物理与能源学院，福建省量子调控与新能源材料重点实验室，福建 福州
关键词: SrCoO3-δ薄膜；Fe、Ni掺杂；脉冲激光沉积；磁性；电致电阻效应；SrCoO3-δ Thin Films； Fe-Ni Doping； Pulsed Laser Deposition； Magnetic Properties； Electroresistance Effect
摘要: SrCoO3-δ作为典型钙钛矿过渡金属氧化物，其氧空位及B位掺杂对磁电性能的调控性，以及丰富的物理特性如庞电致电阻效应在信息存储领域的潜在应用，使其成为研究热点。本文采用固相反应法制备Fe、Ni不同比例掺杂的SrCo0.4Fe0.6-XNiXO3-δ (x = 0, 0.3, 0.6)靶材，以PMN-PT铁电单晶为衬底，通过脉冲激光沉积法制备薄膜，表征其晶体结构、磁性及电致电阻特性。实验成功制备出纯相且有一定择优取向生长的薄膜；5 K下薄膜呈铁磁性，其中SrCo0.4Ni0.6O3-δ饱和磁矩最大；所有薄膜在250 K~400 K温区展现出近100%的电致电阻效应。本研究丰富了钙钛矿过渡金属氧化物的研究内容，在薄膜中得到的庞电致电阻效应使其在信息存储、新型电磁元器件领域有着潜在的实际应用。
Abstract: As a typical perovskite transition metal oxide, SrCoO3-δ has become a research hotspot due to the tunability of its magnetic and electric properties by oxygen vacancies and B-site doping, as well as the potential applications of its abundant physical properties such as the colossal electroresistance effect in the field of information storage. In this paper, with PMN-PT ferroelectric single crystal as the substrate, SrCo0.4Fe0.6-XNiXO3-δ (x = 0, 0.3, 0.6) targets with different doping ratios of Fe and Ni were prepared by the solid-state reaction method, and the corresponding thin films were fabricated via the pulsed laser deposition method. Their crystal structure, magnetic properties and electroresistance effect were characterized. Pure-phase thin films with preferential orientation growth were successfully prepared. The thin films exhibit ferromagnetism at low temperature region, among which SrCo0.4Ni0.6O3-δ presents the largest saturation magnetic moment. The thin films show a nearly 100% electroresistance effect in the temperature range of 250 K to 400 K. This study enriches the research content of perovskite transition metal oxides, and the colossal electroresistance effect obtained in the thin films endows them with potential practical applications in the fields of information storage and new electromagnetic devices.
文章引用：陈盈如, 叶颖, 叶煜彤, 张裕祥, 叶晴莹, 王彤, 陈水源. 掺杂SrCoO3-δ薄膜的磁性及电致电阻效应研究[J]. 应用物理, 2026, 16(3): 192-198. https://doi.org/10.12677/app.2026.163019

参考文献

[1] Lee, J.H., Choi, W.S., Jeen, H., Lee, H., Seo, J.H., Nam, J., et al. (2017) Strongly Coupled Magnetic and Electronic Transitions in Multivalent Strontium Cobaltites. Scientific Reports, 7, Article No. 16066. [Google Scholar] [CrossRef] [PubMed]
[2] Choi, W.S., Jeen, H., Lee, J.H., Seo, S.S.A., Cooper, V.R., Rabe, K.M., et al. (2013) Reversal of the Lattice Structure in SrCoOx Epitaxial Thin Films Studied by Real-Time Optical Spectroscopy and First-Principles Calculations. Physical Review Letters, 111, Artice ID: 097401. [Google Scholar] [CrossRef] [PubMed]
[3] Tambunan, O.T., Parwanta, K.J., Acharya, S.K., Lee, B.W., Jung, C.U., Kim, Y.S., et al. (2014) Resistance Switching in Epitaxial SrCoOx Thin Films. Applied Physics Letters, 105, Article ID: 063507. [Google Scholar] [CrossRef] 
[4] Hoffmann, M., Borisov, V.S., Ostanin, S., Mertig, I., Hergert, W. and Ernst, A. (2015) Magnetic Properties of Defect-Free and Oxygen-Deficient Cubic SrCoO3–δ. Physical Review B, 92, Article ID: 094427. [Google Scholar] [CrossRef] 
[5] Jeen, H., Choi, W.S., Freeland, J.W., Ohta, H., Jung, C.U. and Lee, H.N. (2013) Topotactic Phase Transformation of the Brownmillerite SrCoO2.5 to the Perovskite SrCoO3–δ. Advanced Materials, 25, 3651-3656. [Google Scholar] [CrossRef] [PubMed]
[6] Takeda, T. and Watanabe, H. (1972) Magnetic Properties of the System SrCo1−xFexO3−y. Journal of the Physical Society of Japan, 33, 973-978. [Google Scholar] [CrossRef] 
[7] Long, Y., Kaneko, Y., Ishiwata, S., Taguchi, Y. and Tokura, Y. (2011) Synthesis of Cubic SrCoO3 Single Crystal and Its Anisotropic Magnetic and Transport Properties. Journal of Physics: Condensed Matter, 23, Article ID: 245601. [Google Scholar] [CrossRef] [PubMed]
[8] Lim, J. and Yu, J. (2018) Role of Oxygen Vacancy in the Spin-State Change and Magnetic Ordering in SrCoO3–δ. Physical Review B, 98, Article ID: 085106 .
[9] 熊光成. 氧化物电致电阻变换与自束缚载流子[J]. 物理学进展, 2012, 32(5): 233-283.
[10] 熊元强. 磁性氧化物薄膜中电致电阻和电控磁效应研究[D]: [博士学位论文]. 南京: 南京大学, 2019.
[11] 李霞. 钙钛矿钴氧化物制备及其电致电阻性能研究[D]: [硕士学位论文]. 上海: 上海师范大学, 2014.
[12] Callori, S.J., Hu, S., Bertinshaw, J., Yue, Z.J., Danilkin, S., Wang, X.L., et al. (2015) Strain-Induced Magnetic Phase Transition in SrCoO3−δ Thin Films. Physical Review B, 91, Article ID: 140405. [Google Scholar] [CrossRef] 
[13] 刘颖. 钴酸锶粉体的制备及其催化降解染料废水的研究[D]: [硕士学位论文]. 武汉: 武汉理工大学, 2004.
[14] 李晓天. 钙钛矿型La2/3Sr1/3MnO3薄膜微观结构及其物理性能的研究[D]: [硕士学位论文]. 青岛: 青岛大学, 2018
[15] Lu, N., Zhang, P., Zhang, Q., Qiao, R., He, Q., Li, H., et al. (2017) Electric-Field Control of Tri-State Phase Transformation with a Selective Dual-Ion Switch. Nature, 546, 124-128. [Google Scholar] [CrossRef] [PubMed]
[16] Potze, R.H., Sawatzky, G.A. and Abbate, M. (1995) Possibility for an Intermediate-Spin Ground State in the Charge-Transfer Material SrCoO3. Physical Review B, 51, 11501-11506. [Google Scholar] [CrossRef] [PubMed]
[17] 戴道生. 铁磁学[M]. 第2版. 北京: 科学出版社, 2017: 73.
[18] Petrie, J.R., Jeen, H., Barron, S.C., Meyer, T.L. and Lee, H.N. (2016) Enhancing Perovskite Electrocatalysis through Strain Tuning of the Oxygen Deficiency. Journal of the American Chemical Society, 138, 7252-7255. [Google Scholar] [CrossRef] [PubMed]
[19] 杨昌平, 陈顺生, 戴琪, 等. Nd0.67Sr0.33MnOy(y < 0.3)中的自旋相关电致电阻效应[J]. 物理学报, 2007, 56(8): 4908-4913.
[20] 严蔚胜. 薄膜结构SrCoO3-δ体系磁、电性能研究[D]: [硕士学位论文]. 福州: 福建师范大学, 2019.

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