In-Plane Transverse Susceptibility of (111)-Oriented Iron Garnet Films

作者：Syvorotka Ihor I; Vetoshko Petr M; Skidanov Vladimir A; Shavrov Vladimir G; Syvorotka Ihor M

来源：IEEE Transactions on Magnetics, 2015, 51(1): 2000703.

DOI：10.1109/TMAG.2014.2356175

• Epitaxial iron garnet film
• fluxgate magnetometer
• magnetic anisotropy
• magnetic susceptibility

Iron garnet films with various compositions Y3Fe5O12 (YIG), (LuPr)(3)Fe5O12 (LuPrIG), and Tm-3(FeSc)(5)O-12 (TmScIG) were grown by liquid phase epitaxy on gadolinium gallium garnet substrates. The angular dependences of in-plane transverse magnetic susceptibility chi' (phi) were investigated to estimate their applicability as a fluxgate core. The chi' (phi) dependence permitted the determination of the anisotropy field H-C in the film plane. Experimentally obtained values of H-C show good agreement with theoretical values and correspond to 2.5, 0.92, and 0.03 Oe for YIG, LuPrIG, and TmScIG epitaxial films, respectively. The influence of garnet composition on mechanisms of decreasing of induced in-plane anisotropy field was determined. TmScIG films exhibit about 100-fold reduction in the anisotropy in the plane of the film as compared with films of pure YIG.

• 出版日期2015-1