PL EN


Preferences help
enabled [disable] Abstract
Number of results
2005 | 107 | 1 | 193-197
Article title

Frequency Dependence of Electrical Response of Polycrystalline LCMO Thin Films

Content
Title variants
Languages of publication
EN
Abstracts
EN
Influence of strong electric field in wide frequency range (from DC to 35 GHz) on electrical resistance of thin La_{0.67}Ca_{0.33}MnO_3 polycrystalline manganite films was investigated in the range of (78÷300) K. Different behavior of resistance change vs. temperature was observed when pulsed DC electric field and microwaves were applied to the films. When pulsed DC electric field is applied the electric-field-induced resistance change ("electroresistance") of manganite film depended nearly monotonically on temperature. However, in microwave electric fields a non-monotonic character of the electroresistance temperature dependence was observed. The dependence of the electroresistance on quality of manganite films was observed in case of microwaves. The experimental findings are explained assuming different electrical current mechanisms in case of DC and microwave fields. The applied voltage drops mainly across the grains of polycrystalline film due to a presence of displacement currents in case of microwaves, whereas in DC case the voltage drop is across the grain boundaries.
Keywords
EN
Year
Volume
107
Issue
1
Pages
193-197
Physical description
Dates
published
2005-01
received
2004-08-22
References
  • 1. S. Asmontas, A. Abrutis, J. Gradauskas, A. Lucun, A. Oginskis, V. Plausinaitiene, A. Suziedelis, B. Vengalis, Acta Phys. Pol. A, 105, 141, 2004
  • 2. P. Cimmperman, V. Stankevic, N. Zurauskiene, S. Balevicius, F. Anisimovas, J. Parseliunas, O. Kiprijanovic, L.L. Altgilbers, Acta Phys. Pol. A, 105, 107, 2004
  • 3. A. Asamitsu, Y. Tomioka, H. Kuwahara, Y. Tokura, Nature, 388, 50, 1997
  • 4. S.B. Ogale, V. Talyansky, C.H. Chen, R. Ramesh, R.L. Greene, T. Venkatesan, Phys. Rev. Lett., 77, 1159, 1996
  • 5. N.I. Solin, A.A. Samochvalov, S.V. Naumov, Fiz. Tverd. Tel., 40, 1881, 1998
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv107n127kz
Identifiers
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.