Structural, microstructural and electrical properties of La0.67(Ba,Sr)0.33MnO3 system

Citation

Gan, Albert Han Ming and Lim, Kean Pah and Chen, Soo Kien and Talib, Zainal Abidin and Wong, Jen Kuen (2010) Structural, microstructural and electrical properties of La0.67(Ba,Sr)0.33MnO3 system. In: Malaysia Annual Physics Conference 2010 (PERFIK‐2010), 27-30 Oct. 2010, Damai Laut, Perak, Malaysia. (pp. 254-256).

Abstract

La0.67(Ba,Sr)0.33MnO3 were prepared via solid‐state reaction method. Rietveld refinement showed that when Ba2+(1.49Å) is replaced with smaller ion, Sr2+(1.32Å), its lattice parameter, volume, bond distance and angle decreases, and also different microstructure was obtained. Transition temperature, Tp shifted to higher temperature while the resistance and magnetoresistance (MR) behaviour of samples were quite similar. This phenomenon believed to be due to the variation of spin‐dependent scattering and/or spin‐polarization tunneling across the grain surface/boundary. Typical polycrystalline (intrinsic and extrinsic MR) type of MR is shown for both samples. The highest % of low‐field magnetoresistance (LFMR) (at 0.1T) of ‐11.5% and ‐10.2% at 80 K was given by La0.67Ba0.33MnO3 (LBMO) and La0.67Sr0.33MnO3 (LSMO) samples respectively.

Download File

Preview

PDF (Abstract)
Structural, microstructural and electrical properties of La0.67(Ba,Sr)0.33MnO3 system.pdf
Download (90kB) | Preview

Additional Metadata

Item Type:	Conference or Workshop Item (Paper)
Divisions:	Faculty of Science
DOI Number:	https://doi.org/10.1063/1.3573746
Publisher:	American Institute of Physics
Keywords:	LEMR; Transition temperature
Depositing User:	Nabilah Mustapa
Date Deposited:	27 Sep 2017 06:37
Last Modified:	27 Sep 2017 06:37
Altmetrics:	http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1063/1.3573746
URI:	http://psasir.upm.edu.my/id/eprint/57374
Statistic Details:	View Download Statistic

Actions (login required)

View Item