Preparation and Exchange Bias of a Cr2O3/(La0.7Sr0.3)MnO3 Magnetic Hetero Junction


Article Preview

We investigated the magnetic interaction between antiferromagnetic, magnetoelectric Cr2O3 film and ferromagnetic La0.7Sr0.3MnO3 film, which shows colossal magneto-resistance. Magnetic properties and structural analyses revealed that a decrease in the thickness of La0.7Sr0.3MnO3 films gives rise to a change in magnetic anisotropy from perpendicular to in-plane. The exchange interaction between Cr2O3 and La0.7Sr0.3MnO3 also changed depending on the magnetic properties of La0.7Sr0.3MnO3. This suggests that the crystallographical control and the selection of a suitable thickness of La0.7Sr0.3MnO3 are important to obtain an exchange interaction in the magnetic hetero system using colossal magneto-resistance material.



Edited by:

Kazumi Kato, Tadashi Takenaka, Masasuke Takata and Kazuo Shinozaki




T. Yokota et al., "Preparation and Exchange Bias of a Cr2O3/(La0.7Sr0.3)MnO3 Magnetic Hetero Junction", Key Engineering Materials, Vol. 388, pp. 289-292, 2009

Online since:

September 2008




[1] S. Okamoto, S. Ishihara, and S. Maekawa, Phys. Rev. B 61(2000) 451.

[2] C. N. R. Rao, A. R. Raju, V. Ponnambalam, Sachin Parashar, and N. Kumar, Phys. Rev. B 61(2000) 594.

[3] N. Nur, S. Park, P. A. Sharma, J. S. Ahn, S. Guha, and S-W. Cheong, Nature 429 (2004) 392.

[4] J. Wang, J. B. Neaton, H. Zheng, V. Nagarajan, S. B. Ogale, B. Liu, D. Viehland, V. Vaithyanathan, D. G. Schlom, U. V. Waghmare, N. A. Spaldin, K. M. Rabe, M, Wuttig, R. Ramesh, Science 299(2003), p.1719.

[5] E. Kita, A. Tasaki, and K. Siratori, Jpn. J. Appl. Phys. 18 (1979)1361.

[6] T. Yokota, T. Kuribayashi, M. Gomi, T. Shundo, and Y. Sakakibara, Advanced Materials Research 11-12 (2006)133.

[7] W. H. Meiklejohn and C. P. Bean, Phys. Rev. 105(1957)904.

[8] Y. Suzuki, H. Y. Hwang, S-W. Cheong, T. Siegrist, R. B. van Dover, A. Asamitsu, and Y. Tokura, J. Appl. Phys. 83 (1998)7064.

[9] S. Jin, T.H. Tiefel, M. McCormack, H. M. O'Bryan, L.H. Chen, R. Ramesh, and D. Schurig, Appl. Phys. Lett. 67(1995)557.

[10] A. Urushihara, Y. Morimoto, T. Arima, A. Asamitsu, G. Kido, and Y. Tokura, Phys. Rev. 51(1995)14103.

[11] K. Binder and A. P. Young, rev. Mod. Phys., 58 (1986) 801.

[12] T. Yokota, T. Kuribayashi, S. Murata, M. Gomi, Proceedings of the 24 th Japan-Korea International Seminor on Ceramics (2007)373. e-mail: yokota. takeshi@nitech. ac. jp Fax: 052-735-5290.