Magnetoelastic properties of La0.67Ca0.33MnO3 film determined by FMR under stress

Bohdan Kundys 2Vladimir P. Dyakonov 1,2Ryszard Żuberek 2Yuriy Bukhantsev 2Ritta Szymczak 2Henryk Szymczak 2Piotr Gierlowski 2

1. National Academy of Sciences of Ukraine, Donetsk Technical-Physical Institute, R. Luxemburg 72, Donetsk 83114, Ukraine
2. Polish Academy of Sciences, Institute of Physics, al. Lotników 32/46, Warszawa 02-668, Poland

Abstract

The FMR spectra of the La0.67Ca0.33MnO3 ferromagnetic film deposited onto y-cut LiNbO3 substrate have been investigated in wide range of temperature below the Curie point(250K). The strain was mechanically introduced into film using a special holder configuration. The effect of this action results in a shift of resonance field with respect to unstressed state. The reduced change of in-plain resonance field (Δ Hs|), which is proportional to magnetoelastic stress parameter Bγ ,2 fits well Callen theory corresponding to single ion crystal field interaction in the sample in a whole ferromagnetic range of temperatures.

Acknowledgements

This work was supported by KBN research grant number 2P03B04924 and in part by European Community program ICA1-CT-2000-70018 (Center of Excellence CELDIS).

 

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Presentation: oral at E-MRS Fall Meeting 2003, Symposium D, by Bohdan Kundys
See On-line Journal of E-MRS Fall Meeting 2003

Submitted: 2003-05-07 13:54
Revised:   2009-06-08 12:55