- 期刊
- OpenAccess
Structure of BaTi(subscript 1−x)Fe(subscript x)O(subscript 3-δ) Multiferroics Using X-ray Analysis
並列摘要
BaTiO(subscript 3-δ) (BTO) and BaTi0.88Fe0.12O(subscript 3-δ) (BTFO) polycrystalline samples were investigated to understand the role that Fe dopant and oxygen vacancy play on their various properties. Their structures were examined using X-ray diffraction and X-ray absorption spectroscopy. Their optical and conduction properties were also characterized at room temperature. Our results show that BTO is a tetragonal-phase ferroelectric material with a wide band gap E(subscript g) ≈ 3.51 eV while BTFO is a hexagonal-phase multiferroic material with smaller band gap E(subscript g) ≈ 3.40 eV. Fe doping ions, which exist in both Fe(superscript 3+) and Fe(superscript 4+) forms, give rise to positively-charged oxygen vacancies to create donor impurity levels in the forbidden band. The UV-VIS absorption spectrum of BTFO exhibits a broadening in the visible region. The red shift is observed in both the absorption and photoluminescence spectra relative to those of BTO. The leakage current is larger in BTFO than in BTO.
並列關鍵字
無資料被引用紀錄
延伸閱讀
- 吳致賢（2005）。Preparation, structure and properties of Bi2+x-zSr2-x+zCuOy (x=0-0.1;z=0-0.1)compounds〔碩士論文，淡江大學〕。華藝線上圖書館。https://doi.org/10.6846/TKU.2005.00750
- Chambers, L. G. (1991). SOME PROPERTIES OF THE FUNCTIONAL EQUATION ϕ(x)=f(x)+∫_0^(λx)g(x,y,ϕ(y))dy. International Journal of Mathematics and Mathematical Sciences, 1991(), 27-44. https://doi.org/10.1155/S0161171291000030
- Lien, C. Y., Kao, H. C. I., Ling, D. C., Lu, H. H., Chen, J. M., & Lee, J. M. (2005). Structure and Superconductivity of Bi2(Sr2−xMx)CuO6 (M = La, Gd, Y) Compounds. Chinese Journal of Physics, 43(3S), 629-637. https://www.airitilibrary.com/Article/Detail?DocID=05779073-200506-201210080013-201210080013-629-637
- 陳善儉（2015）。Preparation and superconductivity in (Ba1-xYbx)Fe2As2 single crystals〔博士論文，國立中正大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0033-2110201614023026
- Salehi, H., Hosseini, S. M., & Shahtahmasebi, N. (2004). First-Principles Study of the Electronic Structure of BaTiO3 using Different Approximations. Chinese Journal of Physics, 42(5), 619-628. https://www.airitilibrary.com/Article/Detail?DocID=05779073-200410-201210090012-201210090012-619-628