Liu Mei, Hu Linglong, Ma Yue, Feng Ming, Xu Shichong, Li Haibo
Key Laboratory of Functional Materials Physics and Chemistry Ministry of Education, Jilin Normal University, Changchun, 130103, China.
National Demonstration Center for Experimental Physics Education, Jilin Normal University, Siping, 136000, China.
Sci Rep. 2019 Jul 23;9(1):10670. doi: 10.1038/s41598-019-47215-3.
We prepared FeCoPt/SiO thin films by sol-gel spin-coating technique. As-prepared composite films were reduced in hydrogen to induce texture growth. Structural, magnetic property and surface morphology of the films were characterized by X-ray diffraction (XRD), vibrating sample magnetometer (VSM) and scanning electron microscope (SEM). These experimental data indicate that integrated intensity ratio I/I of diffraction peaks (200) and (110) of FeCo firstly increases and then decreases, while the coercivity first decreases and then increases with increasing Pt doping content. The specimen with less Pt doping content has a large I/I value and small coervicity value, which is closely related with strong (200) texture in FeCo thin film. These results indicate that fcc-Pt is also in favor of promoting (200) FeCo texture like Al or Cu elements, and this similar trends of Pt and Al originate from their similar atomic radius and crystal cell volume.
我们采用溶胶-凝胶旋涂技术制备了FeCoPt/SiO薄膜。将制备好的复合薄膜在氢气中还原以诱导织构生长。通过X射线衍射（XRD）、振动样品磁强计（VSM）和扫描电子显微镜（SEM）对薄膜的结构、磁性和表面形貌进行了表征。这些实验数据表明，FeCo衍射峰（200）和（110）的积分强度比I/I先增大后减小，而矫顽力随Pt掺杂含量的增加先减小后增大。Pt掺杂含量较少的样品具有较大的I/I值和较小的矫顽力值，这与FeCo薄膜中强烈的（200）织构密切相关。这些结果表明，面心立方结构的Pt与Al或Cu元素一样，也有利于促进（200）FeCo织构，并且Pt和Al的这种相似趋势源于它们相似的原子半径和晶胞体积。
