Paper Titles
Site-Defined Micropatterning Using Atomic Force Microscopic Lithography
p.903
Characterization of Nanoporous Low Dielectric Polysilsesquioxane Thin Films
p.907
Nano Pattern Mold Technology Using Nano Stamper Based on Quartz
p.912
Structural Properties of Potassium Encapsulated in Carbon Nanotubes
p.919
Grain-Size Effects and the Physical Properties of La0.7Ca0.3MnO3-δ
p.929
Preliminary Study of the Apparatus for Electron Stimulated Desorption of Rare Gas Solids
p.935
Shear Flow Analysis of Nanosize Particle Flow Behavior Using Kinetic Theory
p.939
Ethical Issues on Nanotechnology in Asia
p.945
Synthesis of Carbon Nanotubes on Metal Substrates by Plasma-Enhanced Chemical Vapor Deposition
p.950

Grain-Size Effects and the Physical Properties of La0.7Ca0.3MnO3-δ

Article Preview

Abstract:

The effects of grain-size in La0.7Ca0.3MnO3-δ (LCMO) system have been studied in connection with the magnetic and electronic properties. LCMO system prepared by the solid-state reaction was annealed in air at 1200, 1300 and 1400°C. The grain sizes of LCMO samples become larger with increasing of annealing temperature (TA ). The magnetization in LCMO samples increased while the coercive field decreased with increasing TA. The conductivity increased and the metal-insulator transition temperature TM-I decreased with increasing of TA. These physical properties are due to the oxygen deficiency caused by the increase of grain size. Finally, it was found that the grain size and the mechanical connection between grains play an important role in determining the electronic and magnetic properties.

You might also be interested in these eBooks
On the Convergence of Bio-, Information-, Enrivonmental-, Energy-, Space- and Nano-Technolgies View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 277-279)

Pages:

929-934

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.277-279.929

Citation:

Cite this paper

Online since:

January 2005

Authors:

H.K. Lee, Horst Baier, J.S. Park, Y.P. Lee, Youn Seoung Lee

Keywords:

Grain Size, La0.7Ca0.3MnO3-δ, Magnetisation, Metal-Insulator Transition Temperature, Oxygen Deficiency, Resistivity

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2005 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] J. Z. Sun, W. J. Gallagher, P. R. Duncombe, L. Krusin-Elbaum, R. A. Aliman, A. Gupta, Y. Lu, G. Q. gong, and G. Xiao, Appl. Phys. Lett. 69, 3266 (1996).

DOI: 10.1063/1.118031

Google Scholar

[2] S. Jin, T. H. Tiefel, M. McCormarck, R. A. Faastnacht, R. Ramesh, and L. H. Chen, Science 264, 413 (1994).

Google Scholar

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

Google Scholar

[4] J. F. Mitchell, D. N. Argyriou, C. D. Potter, D. G. Hinks, J. D. Jorgensen, and S. D. Bader, Phys. Rev. B 54, 6172 (1996).

Google Scholar

[5] D. Niebieskikwiat, R. D. Sanchez, A. Caneiro, and B. Alascio, Rev. B 63, 212402 (2001).

Google Scholar

[6] H. L. Ju, C. Kwon, Q. Li, R. L. Greene, and T. Venkatesan, Appl. Phys. Lett. 65, 2108 (1994).

Google Scholar

[7] A. Gupta, T. R. McGuire, P. R. Duncombe, M. Rupp, J. Z. Sun, W. J. Gallagher, and G. Xiao, Appl. Phys. Lett. 67, 3494 (1995).

Google Scholar

[8] M. F. Hundley, M. Hawley, R. H. Heffner, Q. X. Jia, J. J. Neumeier, J. Tesmer, J. D. Thompson, and X. D. Wu, Appl. Phy. Lett. 67, 3494 (1995).

Google Scholar

[9] X. L. Wang, S. X. Dou, H. K. Liu, m. Ionescu, and B. Zeimetz, Appl. Phy. Lett. 73, 396 (1998).

Google Scholar

[10] B. Martinez, L. I. Balcells, J. Fontcuberta, X. Obradors, C. H. Cohenca, and R. F. Jardim, J. Appl. Phys. 83, 7058 (1998).

Google Scholar

[11] H. Y. Hwang, S. -W. Cheong, N. P. Ong, and B. Batogg, Phys. Rev. Lett. 77, 2041 (1996).

Google Scholar

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

Google Scholar

[13] K. -I. Kobayashi, T. Kimura, H. Sawada, K. Terakura, and Y. Tokura, Nature 395, 677 (1998).

Google Scholar

[14] E. S. Vlakhov, R. A. Chakalova, K. A. Nenkov, K. Dörr, A. Handstein, and K. -H. Müller, J. Appl. Phys. 83, 2152 (1998).

Google Scholar

[15] C. L. Yuan, S. G. Wang, W. H. song, T. Yu, J. m. Dai, S. L. Ye, and Y. P. Sun, Appl. Phys. Lett. 75, 3853 (1999). Title of Publication (to be inserted by the publisher).

Google Scholar

[16] C. L. Yuan, S. G. Wang, W. H. song, T. Yu, J. m. Dai, S. L. Ye, and Y. P. Sun, Appl. Phys. Lett. 75, 3853 (1999).

Google Scholar

[17] Srinivas V. Pietambaram, D. Kumar, Rajiv K. Singh, C. B. Lee, Mat. Res. Soc. 167, J3. 14. 1(2000).

Google Scholar

[18] Y. S. Lee, V. G. Prokhorov, H. J. Shin, and Y. P. Lee, Phys. Stat. Sol. (a) 196, 70 (2003).

Google Scholar