Disorder in fluence on the magnetic properties of La0 .55Sr0.45MnO3/SrTiO3 superlattices

N.HABERKORN, M.SIRENA, J. GUIMPEL, L.B. STEREN

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

Elsevier

Lugar: Amsterdam; Año: 2004 vol. 272 p. 1244 - 1246

0304-8853

The structural and physical properties of La0 :55 Sr0 :45 MnO3 =SrTiO 3 superlattices grown by magnetron sputtering are studied.Two deposition temperatures and different mismatched substrates and buffer layers were used.The structure was determined by re .nement through X-ray diffraction pattern .tting.The results indicate 1 unit cell (u.c.) interdiffusion at the interfaces and a 1 u.c.layer thickness .uctuation,i.e.roughness.In-plane hysteresis loops show the expected ferromagnetic behavior,while the perpendicular-to-plane hysteresis loops show anomalies which could evidence magnetic domain size inhomogeneities and stress.a0 :55 Sr0 :45 MnO3 =SrTiO 3 superlattices grown by magnetron sputtering are studied.Two deposition temperatures and different mismatched substrates and buffer layers were used.The structure was determined by re .nement through X-ray diffraction pattern .tting.The results indicate 1 unit cell (u.c.) interdiffusion at the interfaces and a 1 u.c.layer thickness .uctuation,i.e.roughness.In-plane hysteresis loops show the expected ferromagnetic behavior,while the perpendicular-to-plane hysteresis loops show anomalies which could evidence magnetic domain size inhomogeneities and stress.