%0 Conference Paper %K Perovskite %K manganese compounds %K lanthanum compounds %K Epitaxial growth %K Ferromagnetic materials %K Magnetization %K Heterojunctions %K Magnetic field effects %K X ray diffraction analysis %K Magnetic hysteresis %K Magnetic field measurement %K Spin valves %A M.C Robson %A S.B Ogale %A R Godfrey %A T Venkatesan %A M Johnson %A Ramamoorthy Ramesh %A Pearton S.J %A Shul R.J %A Wolfgang E %A Ren F %A Tenconi S %B Materials Research Society Symposium - Proceedings %D 1997 %G eng %I MRS, Warrendale, PA, United States %P 243-248 %T Fabrication of La0.7Sr0.3MnO3/La0.5Sr0.5CoO3/ La0.7Sr0.3MnO3 heterostructures for spin valve applications %V 494 %X

Epitaxial growth of oxide heterostructures, which may be utilized in spin valve applications, has been demonstrated. The heterostructures consist of two ferromagnetic layers separated by a non-magnetic metallic interlayer. The ferromagnetic material used is the manganese perovskite oxide, La0.7Sr0.3MnO3, while the metallic oxide interlayer is La0.5Sr0.5CoO3. X-ray diffraction spectra demonstrate the high structural quality of the heterostructures. The magnetization of the heterostructure as a function of magnetic field measured at room temperature yields a double hysteresis loop that is characteristic of this type of spin valve structure. The behavior of this double hysteresis loop is also examined as a function of the metallic interlayer thickness.