Complex Impedance Investigation of Epitaxial LCMO Thin Films

• Authors: E. Mateev , T. Nurgaliev , B. Blagoev
• Languages of publication: EN

Abstracts

EN

Epitaxial La_{0.67}Ca_{.33}MnO_3 (LCMO) thin films by off-axis magnetron sputtering were deposited on SrTiO_3 (STO) substrates. Complex impedance measurements (module and phase of the thin film impedance) in frequency range 1-30 kHz are done. Substantial dependence of both: module and phase of the complex surface impedance is observed. The temperature interval scanned is from 77 K to room temperature. The impedance has inductive behavior for temperatures less than the Curie temperature and capacitive for higher temperatures. Reduction of the film thickness from 60 to 30 nm shifts the impedance curves to the lower temperatures.

Keywords

EN

72.20.-i; 72.80.Ga; 72.90.+y; 73.61.Le

Discipline

• 73.61.Le: Other inorganic semiconductors
• 72.80.Ga: Transition-metal compounds
• 72.90.+y: Other topics in electronic transport in condensed matter (restricted to new topics in section 72)
• 72.20.-i: Conductivity phenomena in semiconductors and insulators(see also 66.70.-f Nonelectronic thermal conduction and heat-pulse propagation in solids; thermal waves)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 3
• Pages: 787-790

Dates

published

2014-08

received

2013-02-27

(unknown)

2014-05-15

Contributors

author

E. Mateev

• Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria

author

T. Nurgaliev

• Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria

author

B. Blagoev

• Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria

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Identifiers

DOI

10.12693/APhysPolA.126.787