Magnetic behavior of epitaxial SrRuO[sub 3] thin films under pressure up to 23 GPa

Le Marrec, F.; Demuer, A.; Jaccard, D.; Triscone, J.-M.; Lee, M. K.; Eom, C. B.
April 2002
Applied Physics Letters;4/1/2002, Vol. 80 Issue 13, p2338
Academic Journal
We report on measurements of electrical resistivity and determination of the Curie temperature of single-crystal epitaxial ferromagnetic SrRuO[sub 3] thin films under hydrostatic pressures up to 23 GPa. The SrRuO[sub 3] thin film was grown on vicinal (001) SrTiO[sub 3] substrate using 90° off-axis magnetron sputtering. At atmospheric pressure, the thin-film Curie temperature is about 150 K. To generate the high pressure, the Bridgman anvil technique was used. Up to 13 GPa, a linear decrease of the Curie temperature was observed at a rate of 5.9 KGPa[sup -1]. Above 13 GPa, a striking saturation of the magnetic transition temperature at 77 K was observed.


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