Structural studies of L10 FePt nanoparticles

被引：145

作者：

Klemmer, TJ ^{[1
]}

Shukla, N

Liu, C

Wu, XW

Svedberg, EB

Mryasov, O

Chantrell, RW

Weller, D

Tanase, M

Laughlin, DE

机构：

[1] Seagate Res, Pittsburgh, PA 15222 USA

[2] Carnegie Mellon Univ, Ctr Data Storage Syst, Pittsburgh, PA 15213 USA

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 12期

关键词：

Iron - Binary alloys - Iron alloys - Nanoparticles - Platinum alloys;

D O I：

10.1063/1.1507837

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied the lattice parameter changes of L1(0) FePt nanoparticles annealed to near equilibrium as a function of composition by x-ray diffraction. We have found that the (111) diffraction peak shifts linearly with composition, however, the c parameter mostly changes in the Pt rich compositions and the a parameter mostly changes in the Fe rich compositions with respect to the equiatomic composition. This causes the tetragonality of the L1(0) structure to be maximized near the Fe 50%/Pt 50% composition. The magnetic properties were measured at room temperature and at 5 K and are correlated to the structural changes occurring as a function of composition. (C) 2002 American Institute of Physics.

引用

页码：2220 / 2222

页数：3

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