An epitaxial orientation of Fe/Cr superlattices -Fe/Cr(211) on MgO(110)is grown by magnetron sputtering.Its structural and magnetic characterizations are presented and compared to those for Fe/Cr(100) superlattices grown simultaneously onto MgO(100) substrates. The epitaxial orientation of the Fe/Cr (211) superlattices is Fe/Cr[011]~iMgO[001] and Fe/Cr[111]iiMgO[110], while that for Fe/Cr(100) is Fe/Cr[001]~~MgO[011]. A uniaxial, in-plane surface anisotropy for the Fe/Cr(211) superlattices along the Fe[011]of 0.06 erg/cm2 is obtained from analysis of the magnetization hysteresis loops.Four oscillations in the antiferromagnetic interlayer coupling and giant magnetoresistance (CiMR) are 0 observed with a period of 18 A for both orientations. The strength, oscillation period, and phase of the magnetic coupling are identical for the two orientations. The GMR values increase by a factor of -4 to 5 on cooling from room temperature to 4.2 K. At 4.2 K the maximum GMR value of the [Fe(14 A)/Cr(8 A)],0 superlattice is 70% for the (211) orientation and 150% for the (100) orientation.

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Giant magetoresistance in epitaxial sputtered Fe/Cr(211) superlattices (abstract) J. Appl. Phys. 75, 7080 (1994); 10.1063/1.356734 Structure and giant magnetoresistance in sputtered and MBE grown Fe/Cr superlattices (invited) (abstract)

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Structural, magnetic, and superconducting properties of ferromagnetic/superconducting multilayers of Fe 4 N/NbN are explored for a variety of thickness combinations. The superconducting properties show that 11 Å ferromagnetic layers are sufficient to decouple the superconducting layers and to yield anisotropic behavior. The upper critical field data are well described by theory for ferromagnetic/superconducting multilayers. This analysis yields an interfacial parameter which characterizes the electron scattering at the ferromagnetic/ superconducting boundary.