Strong perpendicular magnetic anisotropy of Pt/Co/AlN structure

被引：2

作者：

Won, Young Chan ^{[1
]}

Ahn, Jae-Pyoung ^{[2
]}

Lim, Sang Ho ^{[1
,3
]}

机构：

[1] Korea Univ, Dept Nano Semicond Engn, Seoul 02841, South Korea

[2] Korea Inst Sci & Technol, Res Resources Div, Seoul 02792, South Korea

[3] Korea Univ, Dept Mat Sci & Engn, Seoul 02841, South Korea

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2022年 / 918卷

基金：

新加坡国家研究基金会;

关键词：

Perpendicular magnetic anisotropy; Pt/Co/AlN trilayers; Magnetic thin films;

D O I：

10.1016/j.jallcom.2022.165514

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this study, the perpendicular magnetic anisotropy (PMA) and microstructure of Pt/Co/AlN stacks were investigated. At a Co thickness of 0.5 nm, the magnetic moment was not observed in the as-deposited state, but after annealing, it increased significantly. Furthermore, a strong PMA was obtained in the annealed samples; after annealing at 300 degrees C and 400 degrees C, the effective PMA energy densities were 2.28 and 1.96 x 10(7) erg/cm(3), respectively. Similar behavior was observed for samples with thicker Co layers. The magnetic dead layer and interfacial PMA energy density were also investigated to determine the interfacial effects on PMA. The occurrence of strong PMA was supported by high-resolution cross-sectional transmission electron microscopy results, demonstrating a well-defined layered structure for the annealed Pt/Co/AlN samples. (C) 2022 Published by Elsevier B.V.

引用

页数：5

共 26 条

[1]

Ayieko C.O., 2015, Advances in Materials Physics and Chemistry, V5, P458, DOI DOI 10.4236/AMPC.2015.511046

[2] Enhancement of perpendicular magnetic anisotropy through reduction of Co-Pt interdiffusion in (Co/Pt) multilayers [J].

Bandiera, S. ;

Sousa, R. C. ;

Rodmacq, B. ;

Dieny, B. .

APPLIED PHYSICS LETTERS, 2012, 100 (14)

[3] Asymmetric Interfacial Perpendicular Magnetic Anisotropy in Pt/Co/Pt Trilayers [J].

Bandiera, S. ;

Sousa, R. C. ;

Rodmacq, B. ;

Dieny, B. .

IEEE MAGNETICS LETTERS, 2011, 2

[4]

Cullity D., 2009, Introduction to Magnetic Materials, V2nd

[5] Anomalous enhancement in interfacial perpendicular magnetic anisotropy through uphill diffusion [J].

Das, Tanmay ;

Kulkarni, Prabhanjan D. ;

Purandare, S. C. ;

Barshilia, Harish C. ;

Bhattacharyya, Somnath ;

Chowdhury, Prasanta .

SCIENTIFIC REPORTS, 2014, 4

[6] Relative strength of perpendicular magnetic anisotropy at bottom and top interfaces in Pt/Co/MgO trilayers [J].

Gweon, Hyung Keun ;

Lim, Sang Ho .

JAPANESE JOURNAL OF APPLIED PHYSICS, 2018, 57 (03)

[7] A very large perpendicular magnetic anisotropy in Pt/Co/MgO trilayers fabricated by controlling the MgO sputtering power and its thickness [J].

Gweon, Hyung Keun ;

Yun, Seok Jin ;

Lim, Sang Ho .

SCIENTIFIC REPORTS, 2018, 8

[8] Controlling the magnetic anisotropy of CoPt/AlN multilayer films [J].

Hodumi, Y. ;

Shi, J. ;

Nakamura, Y. .

APPLIED PHYSICS LETTERS, 2007, 90 (21)

[9]

Ikeda S, 2010, NAT MATER, V9, P721, DOI [10.1038/NMAT2804, 10.1038/nmat2804]

[10] Reactive Sputtering of Aluminum Nitride (002) Thin Films for Piezoelectric Applications: A Review [J].

Iqbal, Abid ;

Mohd-Yasin, Faisal .

SENSORS, 2018, 18 (06)

← 1 2 3 →