Electrical noise as evidence for phase separation in manganites

被引：7
|
作者：
Wirth, S
Anane, A
Raquet, B
von Molnár, S
机构：
[1] MPI Chem Phys Solids, D-01187 Dresden, Germany
[2] CNRS Thales, Unite Mixte Phys, F-91404 Orsay, France
[3] Lab Natl Champs Magnet Pulses, UMR 5830, F-31432 Toulouse, France
[4] Florida State Univ, MARTECH, Tallahassee, FL 32306 USA
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 290卷
关键词：
thin films-ferromagnetic; metal-insulator transition; noise; phase separation; 1/F NOISE; THIN-FILMS; COEXISTENCE;
D O I：
10.1016/j.jmmm.2004.11.498
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We review measurements of the electrical noise conducted to study the dynamics of the percolation-like metal-insulator transition in mixed valence manganites. We observed mainly 1/f noise, but in few cases significant random telegraph noise (RTN) in La0.7Ca0.3MnO3 films. The latter originates from two-level (TL) fluctuators which are not related to magnetic domains but exhibit large differences in resistance. The life times of the two states experimentally observed over a broad temperature and field range are analyzed by thermal activation and the net magnetization differences of the states are estimated. These results are related to measurements on Pr0.7Ca0.3MnO3. (c) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：1168 / 1171
页数：4
相关论文
共 50 条
  • [1] The evidence of phase separation in perovskite manganites aboveTc
    Hong-wei Tian
    Jian-Feng Zang
    Tao Ding
    Wei-tao Zheng
    Xin Wang
    Journal of Wuhan University of Technology-Mater. Sci. Ed., 2004, 19 : 62 - 63
  • [2] The evidence of phase separation in perovskite manganites above Tc
    Tian, HW
    Zang, JF
    Ding, T
    Zheng, WT
    Wang, X
    JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION, 2004, 19 (02): : 62 - 63
  • [3] The Evidence of Phase Separation in Perovskite Manganites Above Tc
    田宏伟
    Journal of Wuhan University of Technology-Materials Science, 2004, (02) : 62 - 63
  • [4] Phase separation and anisotropy in the electrical properties of weakly doped lanthanum manganites
    Solin, NI
    Kazantsev, VA
    Fal'kovskaya, LD
    Naumov, SV
    PHYSICS OF THE SOLID STATE, 2005, 47 (10) : 1900 - 1908
  • [5] Phase separation and anisotropy in the electrical properties of weakly doped lanthanum manganites
    N. I. Solin
    V. A. Kazantsev
    L. D. Fal’kovskaya
    S. V. Naumov
    Physics of the Solid State, 2005, 47 : 1900 - 1908
  • [6] Nanoscale phase separation in manganites
    Kagan, MY
    Klaptsov, AV
    Brodsky, IV
    Kugel, KI
    Sboychakov, AO
    Rakhmanov, AL
    JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 2003, 36 (35): : 9155 - 9163
  • [7] Phase Separation in Lanthanum Manganites
    Sedykh, Vera D.
    MOSSBAUER SPECTROSCOPY IN MATERIALS SCIENCE - 2016, 2016, 1781
  • [8] Phase separation in models for manganites
    Moreo, A
    INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 1998, 12 (29-31): : 3369 - 3371
  • [9] Direct experimental evidence of physical origin of electronic phase separation in manganites
    Miao, Tian
    Deng, Lina
    Yang, Wenting
    Ni, Jinyang
    Zheng, Changlin
    Etheridge, Joanne
    Wang, Shasha
    Liu, Hao
    Lin, Hanxuan
    Yu, Yang
    Shi, Qian
    Cai, Peng
    Zhu, Yinyan
    Yang, Tieying
    Zhang, Xingmin
    Gao, Xingyu
    Xi, Chuanying
    Tian, Mingliang
    Wu, Xiaoshan
    Xiang, Hongjun
    Dagotto, Elbio
    Yin, Lifeng
    Shen, Jian
    PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2020, 117 (13) : 7090 - 7094
  • [10] Evidence for electronic phase separation in high Tc cuprates and CMR manganites
    Sharma, RP
    PHYSICS IN LOCAL LATTICE DISTORTIONS: FUNDAMENTALS AND NOVEL CONCEPTS LLD2K, 2001, 554 : 75 - 83
12345