Effect of electrical current on magnetic and transport properties of single-crystalline La0.82Ca0.18MnO3

X. D. Wu; K. Suzuki; J. Cochrane; V. Markovich; G. Gorodetsky

doi:10.1109/TMAG.2010.2044755

Effect of electrical current on magnetic and transport properties of single-crystalline La_0.82Ca_0.18MnO₃

X. D. Wu, K. Suzuki, J. Cochrane, V. Markovich, G. Gorodetsky

Department of Physics

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

AC susceptibility and voltage relaxation behaviors after current pulses were studied at various passing through currents for La_0.82Ca _0.18MnO₃ single crystals. It was found that a current of 10 mA caused a significant temperature shift towards lower temperatures on the ac-susceptibility versus temperature curve when measured in a cryostat, while the current induced effect was insignificant when the sample is immersed in liquid N₂. Exponential decay of voltage was observed after current pulses when measured in the cryostat at 77 K, but the effect was greatly suppressed when measured in liquid N₂. The observed results suggest that Joule heating is associated with electrical currents passing through the sample and is the main contribution to the current induced effects.

Original language	English
Article number	5467598
Pages (from-to)	1705-1707
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	46
Issue number	6
DOIs	https://doi.org/10.1109/TMAG.2010.2044755
State	Published - 1 Jan 2010

Keywords

AC susceptibility
Current
Heating
Manganites
Pulse measurements
Voltage

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/TMAG.2010.2044755

Cite this

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title = "Effect of electrical current on magnetic and transport properties of single-crystalline La0.82Ca0.18MnO3",

abstract = "AC susceptibility and voltage relaxation behaviors after current pulses were studied at various passing through currents for La0.82Ca 0.18MnO3 single crystals. It was found that a current of 10 mA caused a significant temperature shift towards lower temperatures on the ac-susceptibility versus temperature curve when measured in a cryostat, while the current induced effect was insignificant when the sample is immersed in liquid N2. Exponential decay of voltage was observed after current pulses when measured in the cryostat at 77 K, but the effect was greatly suppressed when measured in liquid N2. The observed results suggest that Joule heating is associated with electrical currents passing through the sample and is the main contribution to the current induced effects.",

keywords = "AC susceptibility, Current, Heating, Manganites, Pulse measurements, Voltage",

author = "Wu, \{X. D.\} and K. Suzuki and J. Cochrane and V. Markovich and G. Gorodetsky",

note = "Funding Information: One author, X. D. Wu, appreciates the support of the Taft Fellowship from Monash University.",

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T1 - Effect of electrical current on magnetic and transport properties of single-crystalline La0.82Ca0.18MnO3

AU - Wu, X. D.

AU - Suzuki, K.

AU - Cochrane, J.

AU - Markovich, V.

AU - Gorodetsky, G.

N1 - Funding Information: One author, X. D. Wu, appreciates the support of the Taft Fellowship from Monash University.

PY - 2010/1/1

Y1 - 2010/1/1

N2 - AC susceptibility and voltage relaxation behaviors after current pulses were studied at various passing through currents for La0.82Ca 0.18MnO3 single crystals. It was found that a current of 10 mA caused a significant temperature shift towards lower temperatures on the ac-susceptibility versus temperature curve when measured in a cryostat, while the current induced effect was insignificant when the sample is immersed in liquid N2. Exponential decay of voltage was observed after current pulses when measured in the cryostat at 77 K, but the effect was greatly suppressed when measured in liquid N2. The observed results suggest that Joule heating is associated with electrical currents passing through the sample and is the main contribution to the current induced effects.

AB - AC susceptibility and voltage relaxation behaviors after current pulses were studied at various passing through currents for La0.82Ca 0.18MnO3 single crystals. It was found that a current of 10 mA caused a significant temperature shift towards lower temperatures on the ac-susceptibility versus temperature curve when measured in a cryostat, while the current induced effect was insignificant when the sample is immersed in liquid N2. Exponential decay of voltage was observed after current pulses when measured in the cryostat at 77 K, but the effect was greatly suppressed when measured in liquid N2. The observed results suggest that Joule heating is associated with electrical currents passing through the sample and is the main contribution to the current induced effects.

KW - AC susceptibility

KW - Current

KW - Heating

KW - Manganites

KW - Pulse measurements

KW - Voltage

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