The Enhanced Magnetoresistance Effect of La0.67Sr0.33MnO3 with Pentavalent Ions Addition

Bao Xin Huang; Jun Hua Wang; Zhen Hua Wang; Ke Zheng Chen; Yi Hua Liu; Liang Mo Mei

doi:10.4028/www.scientific.net/MSF.675-677.1105

Paper Titles

Synthesis and Characterization of Sr₃MgSi₂O₈:Eu²⁺, Dy³⁺ Phosphor Prepared by a Chemical Solution Method
p.1089

Monodisperse, Luminescent Silica Spheres Synthesized by a New Method
p.1093

Growth Spindle-Like ZnO Nanocrystalline Thin Films on Nickel Layers by Dc Magnetron Sputtering and its Thermal Annealing Properties
p.1097

Electrical Properties of Ag–La_0.67Sr_0.33MnO₃
p.1101

The Enhanced Magnetoresistance Effect of La_0.67Sr_0.33MnO₃ with Pentavalent Ions Addition
p.1105

Preparation of Oil Core/Polyelectrolyte Shell Microcapsules by a Coacervation Method
p.1109

Determination of Refractive Indices and Linear Coefficients of Thermal Expansion for Development of Athermal Glass
p.1113

Investigation on Post Treatment of Nano-Size Silver Conductive Film
p.1117

Microstructure and Wear Properties of TiC/7075 Composites by In Situ Reaction Liquidus Curve Casting Method
p.1121

HomeMaterials Science ForumMaterials Science Forum Vols. 675-677The Enhanced Magnetoresistance Effect of...

The Enhanced Magnetoresistance Effect of La_0.67Sr_0.33MnO₃ with Pentavalent Ions Addition

Abstract:

The magnetic and electrical properties of La0.67Sr0.33MnO3 ( LSMO ) are influenced very much by the Nb dopant. However, this doping effect is restricted by the limited Nb solution into LSMO due to the low calcined temperature. As a result, a second phase LaNbO4 appears in our samples. Enhancements of the low-field magnetoresistance (LFMR) were observed both at 77 K and room temperature in the manganite system prepared by doping Nb2O5 into LSMO powders. The doping amount x of Nb ions ranges from 0-10 % molar ratio. The MR ratios at 77 K with H = 1 T and H = 0.1 T are 33.8 % and 24 % for the x = 0.07 doped sample, respectively. A MR effect up to 9 % was also found for the sample with x = 0.05 at room temperature, which is 2.2 times as large as that for LSMO (4.1%). The spin dependent tunneling and scattering at the interfaces of the grain boundaries are responsible for the LFMR while the high field magnetoresistance (HFMR) originates from the spin dependent transport related to noncollinear spin structure at the interfaces.

You might also be interested in these eBooks

Advanced Material Science and Technology

View Preview

Info:

Periodical:

Materials Science Forum (Volumes 675-677)

Pages:

1105-1108

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.675-677.1105

Citation:

Cite this paper

Online since:

February 2011

Authors:

Bao Xin Huang, Jun Hua Wang, Zhen Hua Wang, Ke Zheng Chen, Yi Hua Liu, Liang Mo Mei

Keywords:

Ceramic Material, Colossal Magnetoresistance, Rare Earth Manganites

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] B. Huang, Y. Liu, R. Zhang, X. Yuan, C. Wang and L. Mei, J. Phys. D: Appl. Phys. Vol 3 6, (2003), p. (1923).

Google Scholar

[2] J.Z. Sun, D.W. Abraham, K. Roche and S.S.P. Parkin, Appl. Phys. Lett. Vol 73, (1998), p.1008.

Google Scholar

[3] H.Y. Hwang, S.W. Cheong, N.P. Ong and B. Batlogg, Phys. Rev. Lett. Vol 77, (1996), p. (2041).

Google Scholar

[4] N. Zhang, W.P. Ding, W. Zhong, D.Y. Xing and Y.W. Du, Phys. Rev. B. Vol 56, (1997), p.8138.

Google Scholar

[5] L.E. Hueso, J. Rivas, F. Rivadulla and M.A. Lopez-Quintela, J. Non-Crystal. Solids. Vol 287, (2001), p.324.

Google Scholar

[6] Ll. Bacells, B. Martinez, F. Sandiumenge and J. Fontcuberta, J Magn Magn Mater. Vol 211, (2000), p.193.

Google Scholar

[7] B. X. Huang, Y. H. Liu, X. B. Yuan, R. Z. Zhang, C. J. Wang and L.M. Mei, J Magn Magn Mater. Vol 280 , (2004), p.176.

Google Scholar