Induced Magnetic Moments of 4<I>d</I> and 5<I>d</I> Elements in Thin Films and Multilayers by X-Ray Magnetic Circular Dichroism

Interfacial ferromagnetism and atomic structures in high-temperature grown Fe3O4/Pt/Fe3O4 epitaxial trilayers

“…To investigate the proximity-induced ferromagnetism, X-ray magnetic circular dichroism (XMCD) [40][41][42] and X-ray resonant magnetic reflectivity (XRMR) [43] techniques have been frequently used. Since the end of 1990s, a number of XMCD and XRMR studies focusing on Pt/3d-ferromagnetic-metal (Fe, Ni, Co, and Ni 81 Fe 19 ) junction systems have been reported and the Pt ferromagnetism in these systems has been established [44][45][46][47][48][49][50][51][52][53][54][55][56]. Recently, these techniques were applied for the Pt/magnetic-oxide systems: Pt/Y 3 Fe 5 O 12 [29][30][31]36], Pt/NiFe 2 O 4 [32,33,37], Pt/CoFe 2 O 4 [34,35,37], Pt/MnFe 2 O 4 [37], and Pt/Fe 3 O 4 [37]; in contrast to the Pt/3d-ferromagnetic-metal systems, the proximity-induced Pt ferromagnetism in these Pt/magnetic-oxide systems was found to be undetectably small when the effect of Pt oxidization is negligible [30,31].…”

Detection of induced paramagnetic moments in Pt onY3Fe5O12via x-ray magnetic circular dichroism

“…On the other hand, Huang et al [23,31,32] and Guo et al [33] pointed out a role of static Pt ferromagnetism induced by magnetic proximity effects at the Pt/YIG interface. The latter scenario is based on the fact that Pt is near the Stoner ferromagnetic instability [34][35][36], and thereby it might be magnetized due to static proximity effects near the interface, as reported in various Pt/ferromagneticmetal junction systems [37][38][39][40]. A possible mechanism for the behavior (ii) was discussed by Shimizu et al [24] and Lin et al [41] in terms of independent paramagnetic moments in Pt, which cause skew scatterings for itinerant electrons in Pt [41][42][43][44][45][46][47].…”