Skip to main content Accessibility help

The Effect of Radiation Induced Disorder on La0.7Ca0.3MnO3–δ Thin Films

  • R. M. Stroud (a1), V. M. Browning (a1), J. M. Byers (a1), D. B. Chrisey (a1), W. W. Fuller-Mora (a1), K. S. Grabowski (a1), J. S. Horwitz (a1), J. Kim (a1), D. L. Knies (a1) and M. S. Osofsky (a1)...


The effects of disorder on the transport and magnetic properties of pulsed laser deposited La0.7Ca0.3MnO3 thin films were studied. Ion irradiation with 10 MeV I and 6 MeV Si ions was used to produce controlled levels of defects ranging from 0.006 to 0.024 displacements per atom. The peak resistance temperature of the I-irradiated films decreased from 264K for the undamaged film to OK for the 0.016 dpa film. The magnetic ordering temperature decreased from 270K (undamaged) to 130K (0.011 dpa), and remained nearly constant at 130K for higher damage levels. This demonstrates a decoupling of the magnetic and metal-insulator transitions. A characteristic relationship between the peak resistance temperature and activation energy of resistance with the form Tp = 285(1-Δρ/115)0.13, was observed for all films. This characteristic relationship indicates that the range of resistivity and magnetoresistivity values for observed La0.7Ca0.3MnO3 can be explained in terms of disorder-limited polaron hopping.



Hide All
1. Goodenough, J. B., Phys. Rev. 100, p. 564 (1955).
2. Wollan, E. O. and Koehler, W. C., Phys. Rev., 100 (2) p. 545 (1955).
3. Jin, S., Tiefel, T. H., McCormack, M., Fastnacht, R. A., Ramesh, R., and Chen, L. H., Science 264, 413 (1994).
4. Zener, C., Phys. Rev. 82, 403 (1951).
5. Millis, A. J., Littlewood, P. B. and Shrairaan, B. I., Phys. Rev. Lett. 74, 5144 (1995).
6. Kiryukhin, V., Casa, D., Hill, J. P., Keimer, B., Vigilante, A., Tomioka, Y. and Tokura, Y., Nature 386, 813(1997).
7. Fontcuberta, J., Martinez, B., Seffar, A., Pinol, S., Garcia-Monuz, J. L. and Obradors, X., Phy. Rev. Lett. 76, 1122(1996).
8. Jin, S., JOM 49, p. 61 (1997).
9. Horwitz, J. S., Dorsey, P. C., Koon, N. C., Rubenstein, M., Byers, J. M., Osofsky, M. S., Harris, V. G., Grabowski, M. S., Knies, D. L., Treece, R. E. and Chrisey, D.B., SPIE 2703, 526 (1996).
10. Hwang, H. Y., Palstra, T. T. M., Cheong, S.-W. and Batlogg, B., Phys. Rev. B 52, 15046 (1995).
11. Ziegler, J. F., Biersack, J. P. and Littmark, U., The Stopping Range of Ions in Solids, (Pergamon Press, New York, 1985).
12. Stroud, R. M., Browning, V. M., Byers, J. M., Chrisey, D. B., Fuller-Mora, W. W., Grabowski, K. S., Knies, D. L. and Osofsky, M. S., in Epitaxial Oxide Thin Films III, edited by Foster, C., Speck, J. S., Schlom, D., Eom, C.-B. and Hawley, M. E. (Mater. Res. Soc. Proc. 474 Pittsburgh, PA 1997), in press.
13. Browning, V. M., Stroud, R. M., Fuller-Mora, W. W., Byers, J. M., Osofsky, M. S., Kneis, D. L., Grabowski, K. S., Koller, D., Kim, J., and Chrisey, D.B. and Horwitz, J. S., submitted to J. Appl. Phys‥
14. Mahendiran, R., Mahesh, R., Raychaudhuri, A. K. and Rao, C. N. R., Solid. State. Comm. 99, 149 (1996).


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed