Structural and magnetic properties of FePt:SiO2 granular thin films
Structural and magnetic properties of FePt:SiO2 granular thin films
复制标题
DOI：
10.1063/1.125264
复制
发表时间：
1999-11
影响因子：
4
通讯作者：
C. Luo;D. Sellmyer
中科院分区：
文献类型：
--
作者：
C. Luo;D. Sellmyer
将沉积的FePt/SiO2多层膜在450 ~ 650℃的温度下退火，制备了纳米FePt:SiO2复合薄膜。这些薄膜由嵌入在SiO2基体中的高各向异性的L10 FePt颗粒组成。研究了这些薄膜的结构和磁性能。我们发现矫顽力和晶粒尺寸高度依赖于退火温度和SiO2浓度。得到了矫顽力在2 ~ 8koe之间，晶粒尺寸在10nm以下的薄膜。这些薄膜作为高密度磁记录介质具有相当大的潜力。
Nanocomposite FePt:SiO2 films have been fabricated by annealing the as-deposited FePt/SiO2 multilayers at temperatures from 450 to 650 °C. These films consist of high-anisotropy tetragonal L10 FePt particles embedded in a SiO2 matrix. The structural and magnetic properties of these films were investigated. We have found that coercivity and grain size are highly dependent on the annealing temperature and SiO2 concentration. Films with coercivities in the range from 2 to 8 kOe and grain sizes of 10 nm or less were obtained. These films have considerable potential as high-density magnetic recording media.