Interlayer magnetic coupling in Fe/Cr multilayered structures

Interplay between superconductivity and ferromagnetism in epitaxialNb(110)∕Au(111)∕Fe(110Yamazaki1, Shannon2, Takagi3 2006Phys. Rev. B173340View full textAdd to dashboardCite

“…31,39,40 However in the absence of a complete theoretical understanding of the trilayer system problem, it is not clear whether this dramatic difference in period is intrinsic, or originates in different sample-preparation techniques -MBE for the Nb/Au/Fe trilayers as opposed to sputtering for the Nb/Au/CoFe.…”

Role of conduction electrons in mediating exchange interactions in Mn-based Heusler alloys

“…For the last four decades, the Anderson model has been successfully applied to a variety of problems of condensed matter physics and contributed to better understanding of numerous experimental properties. The systems studied within the Anderson model vary from dilute 3d magnetic impurities in nonmagnetic metals [58][59][60][61] to complex systems such as Heusler alloys, [43][44][45] rare earths, 62,63 magnetic multilayers, [64][65][66] and diluted magnetic semiconductors. [67][68][69][70] In the present paper, we show that the diversity of the magnetic behavior in Mn-based Heusler alloys can be interpreted in terms of the competition between ferromagnetic RKKY-type exchange and antiferromagnetic superexchange.…”

Oscillatory biquadratic coupling in Fe/Cr/Fe(001)

“…It is known that there may also exist a so-called biquadratic interlayer coupling which is proportional to the cosine of the angle squared and can favor a 90°alignment of the magnetizations of the ferromagnetic layers. The biquadratic coupling energy has the form Ϫ2B 12 (M 1 •M 2 ) 2 . Biquadratic coupling was discovered in Fe/Cr/Fe͑001͒ magnetic trilayers by Rührig et al 12 using magneto-optic Kerr effect microscopy, and has since been found to occur in a number of other systems, such as Fe/͑Al,Au͒/Fe͑001͒, 13 Fe/͑Cu,Ag͒/Fe͑001͒, 14 and NiFe/Ag/NiFe.…”

“…2 Chromium is an interesting choice of spacer material because bulk Cr is known to exhibit incommensurate spin-density-wave antiferromagnetism. 3 Fe/Cr structures grown on Fe͑001͒ whiskers are believed to have the flattest interfaces currently obtainable, and it was in such structures that the interlayer coupling was observed to oscillate with a period of approximately two Cr monolayers ͑ML͒ in addition to the previously discovered long-period oscillations of about 18 Å ͑12.5 ML͒.…”