Polarons, oxygen vacancies, and hydrogen in BaxSr1-xTiO3

被引：13
|
作者：
Scott, JF [1 ]
Redfern, SAT [1 ]
Zhang, M [1 ]
Dawber, M [1 ]
机构：
[1] Univ Cambridge, Dept Earth Sci, Cambridge CB2 3EQ, England
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2001年 / 21卷 / 10-11期
关键词：
optical properties; perovskites; spectroscopy;
D O I：
10.1016/S0955-2219(01)00080-2
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The role of hydrogen in strontium titanate and barium strontium titanate is analysed, for both ceramics and single crystals. New infrared and second-harmonic generation (SHG) experiments show the relationship between hydrogen and oxygen vacancies. The infrared data exhibit strong absorption in the 3000-6000 cm(-1) region due to polarons. The SHG data exhibit rather strong signals at room temperature (nominally forbidden). These data are correlated with the temperature dependence of activation enthalpies from Steinsvik (Oslo), and it is found that the latter are characterised by a universal exponent of 7/4 for the dependence upon vacancy concentration, in agreement with the predictions for a cubic lattice in percolation theory. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：1629 / 1632
页数：4
相关论文
共 50 条
  • [1] Field dependent dielectric behaviour of BaxSr1-xTiO3 perovskites
    Kukreti, Ashish
    Kumar, Ashok
    Naithani, U. C.
    INDIAN JOURNAL OF PURE & APPLIED PHYSICS, 2008, 46 (04) : 276 - 282
  • [2] Electric field dependent attenuation constant in BaxSr1-xTiO3 perovskites
    Kukreti, Ashish
    Kumar, Ashok
    Naithani, U. C.
    INDIAN JOURNAL OF PURE & APPLIED PHYSICS, 2009, 47 (03) : 220 - 228
  • [3] Terahertz Dielectric Response of Ferroelectric BaxSr1-xTiO3 Thin Films
    Kang, Seung Beom
    Kwak, Min Hwan
    Choi, Muhan
    Kim, Sungil
    Kim, Taeyong
    Cha, Eun Jong
    Kang, Kwang Yong
    IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 2011, 58 (11) : 2276 - 2280
  • [4] Electric field dependence of specific heat in BaxSr1-xTiO3 ferroelectric perovskites
    Kukreti, Ashish
    Kumar, Ashok
    Naithani, U. C.
    INDIAN JOURNAL OF PURE & APPLIED PHYSICS, 2009, 47 (01) : 43 - 48
  • [5] Impedance/Modulus Analysis of Sol-gel BaxSr1-xTiO3 Thin Films
    Saif, Ala'eddin A.
    Poopalan, P.
    JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2010, 57 (06) : 1449 - 1455
  • [6] The Lattice Stabilities and Electronic Structure of BaxSr1-xTiO3 Solid Solutions by First-Principles Calculations
    He, Jianping
    Lu, Wenzhong
    Wang, Xiaohong
    FERROELECTRICS, 2009, 388 : 172 - 179
  • [7] Optimization of energy storage density and efficiency in BaxSr1-xTiO3 (x ≤ 0.4) paraelectric ceramics
    Wang, Yu
    Shen, Zong-Yang
    Li, Yue-Ming
    Wang, Zhu-Mei
    Luo, Wen-Qin
    Hong, Yan
    CERAMICS INTERNATIONAL, 2015, 41 (06) : 8252 - 8256
  • [8] The effects of composition gradients of BaxSr1-xTiO3 thin films on their microstructures, dielectric and optical properties
    Tian, HY
    Chan, HLW
    Chung, LC
    No, K
    MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2003, 103 (03): : 246 - 252
  • [9] Development of ferroelectric correlations in the quantum paraelectric and antiferrodistortive regimes in BaxSr1-xTiO3 (x ≤ 0.10)
    Jaffari, G. Hassnain
    Mehmood, Zahid
    Iqbal, Asad M.
    Hasanain, S. K.
    Shah, S. Ismat
    JOURNAL OF APPLIED PHYSICS, 2014, 116 (08)
  • [10] Lattice dynamics and phase transitions peculiarities of BaxSr1-xTiO3 solid solutions with high Sr content
    Konstantinov, A. S.
    Linnik, E. D.
    Razumnaya, A. G.
    Mikheykin, A. S.
    PHYSICA B-CONDENSED MATTER, 2023, 654
12345