Control of crystallographic orientation in nanoparticle film by utilizing bimodal viscoelastic stress in glass matrix

研究表明，由于二维平面应力的影响，FePT与B2O或CoPT与B2O复合时，薄膜的易磁化轴(c轴)可以控制为垂直于薄膜的方向。对于FEPD合金，我们利用Fe和FEPD在富Fe成分区域的相分离，试图形成一种显示软铁和硬FEPD磁体之间交换和静磁耦合的新的磁性薄膜。与B_2O_3玻璃类似，由于Fe基片中产生的二维应力，我们可以制作垂直的FEPD弹簧磁体。

It has been demonstrated that the easy axis of magnetization (c-axis) can be controlled to be normal to the thin film for the combination of FePt and B2O3 or CoPt and B2O3, which is due to the effects of the two-dimensional plane stress. For the FePd alloy, we have utilized the phase separation to Fe and FePd in the Fe-rich compositional region, in order to try to prototype a new magnetic film showing exchange and magnetostatic couplings between soft Fe and hard FePd magnets. Similarly to the B2O3 glass, we could fabricate the perpendicular spring magnet of FePd owing to the two-dimensional stress generated in the Fe matrix.