Influence of Bi underlayer on the magnetic properties of Fe<Subscript>x</Subscript>Pt<Subscript>100-x</Subscript> (<Emphasis Type="BoldItalic">x</Emphasis>=<Emphasis Type="Bold">40</Emphasis>∼<Emphasis Type="Bold">58</Emphasis>) films期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Influence of Bi underlayer on the magnetic properties of FexPt100-x (x=40∼58) films

Authors:	C. Feng B.H. Li G. Han J. Teng T. Yang Y. Jiang G.H. Yu

Affiliation:	(1) Department of Material Physics and Chemistry, University of Science and Technology Beijing, Beijing, 100083, P.R. China;(2) Department of Mathematics and Physics, Beijing Technology and Business University, Beijing, 100037, P.R. China

Abstract:	We have studied the effect of a Bi underlayer on ordering and coercivity H_c of Fe_xPt_100-x thin films (atomic content of Fe x=40∼58). We found that the Bi underlayer enhances H_c remarkably. After annealing at 400 °C for 20 min, a Bi/Fe₄₉Pt₅₁ film can realize an H_c as high as 1.07×10³ kA/m and a ratio of the remnant M_r to the saturated magnetization M_s as high as 0.93. The ordering process of FePt film was promoted by the diffusion of Bi atoms. Moreover, the Bi underlayer broadens the range of x for high H_c from 49∼55 to 43∼55. Interestingly, with Bi underlayer, the high H_c is affected by x to a less extent. PACS 75.50.Ss; 75.50.Vv; 75.60.Ej

Keywords:
本文献已被 SpringerLink 等数据库收录！