skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Thickness effect on magnetocrystalline anisotropy of Co/Pd(111) films: A density functional study

Abstract

In this study, we carried out first-principles calculations on magnetocrystalline anisotropy (MCA) of Co/Pd thin films by adopting two different systems of (i) n-Co/3-Pd and (ii) n-Pd/3-Co. In one system, we vary the thickness of Co layer, fixing the thickness of the Pd layer to 3-monolayers, and in the other system vice versa. MCA is mainly governed by the surface and interface Co atoms, while contributions from other Co atoms are smaller. MCA energy (E{sub MCA}) of the Co/Pd thin film shows oscillatory behavior with the thickness of the Co layer, but is insensitive to the thickness of the Pd layer. In particular, the n-Co/3-Pd films of n = 2, 4, and 6 exhibit strong perpendicular MCA of about 1 meV. Our results suggest that controlling the thickness of the Co layer in Co/Pd (111) is crucial in achieving strong perpendicular MCA.

Authors:
; ; ;  [1]
  1. Department of Physics and EHSRC, University of Ulsan, Ulsan 680-749 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22410124
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANISOTROPY; COBALT; CRYSTAL STRUCTURE; DENSITY FUNCTIONAL METHOD; INTERFACES; LAYERS; MAGNETISM; PALLADIUM; SURFACES; THICKNESS; THIN FILMS

Citation Formats

Jekal, Soyoung, Rhim, S. H., E-mail: sonny@ulsan.ac.kr, E-mail: schong@ulsan.ac.kr, Kwon, Oryong, and Hong, Soon Cheol, E-mail: sonny@ulsan.ac.kr, E-mail: schong@ulsan.ac.kr. Thickness effect on magnetocrystalline anisotropy of Co/Pd(111) films: A density functional study. United States: N. p., 2015. Web. doi:10.1063/1.4908141.
Jekal, Soyoung, Rhim, S. H., E-mail: sonny@ulsan.ac.kr, E-mail: schong@ulsan.ac.kr, Kwon, Oryong, & Hong, Soon Cheol, E-mail: sonny@ulsan.ac.kr, E-mail: schong@ulsan.ac.kr. Thickness effect on magnetocrystalline anisotropy of Co/Pd(111) films: A density functional study. United States. doi:10.1063/1.4908141.
Jekal, Soyoung, Rhim, S. H., E-mail: sonny@ulsan.ac.kr, E-mail: schong@ulsan.ac.kr, Kwon, Oryong, and Hong, Soon Cheol, E-mail: sonny@ulsan.ac.kr, E-mail: schong@ulsan.ac.kr. Thu . "Thickness effect on magnetocrystalline anisotropy of Co/Pd(111) films: A density functional study". United States. doi:10.1063/1.4908141.
@article{osti_22410124,
title = {Thickness effect on magnetocrystalline anisotropy of Co/Pd(111) films: A density functional study},
author = {Jekal, Soyoung and Rhim, S. H., E-mail: sonny@ulsan.ac.kr, E-mail: schong@ulsan.ac.kr and Kwon, Oryong and Hong, Soon Cheol, E-mail: sonny@ulsan.ac.kr, E-mail: schong@ulsan.ac.kr},
abstractNote = {In this study, we carried out first-principles calculations on magnetocrystalline anisotropy (MCA) of Co/Pd thin films by adopting two different systems of (i) n-Co/3-Pd and (ii) n-Pd/3-Co. In one system, we vary the thickness of Co layer, fixing the thickness of the Pd layer to 3-monolayers, and in the other system vice versa. MCA is mainly governed by the surface and interface Co atoms, while contributions from other Co atoms are smaller. MCA energy (E{sub MCA}) of the Co/Pd thin film shows oscillatory behavior with the thickness of the Co layer, but is insensitive to the thickness of the Pd layer. In particular, the n-Co/3-Pd films of n = 2, 4, and 6 exhibit strong perpendicular MCA of about 1 meV. Our results suggest that controlling the thickness of the Co layer in Co/Pd (111) is crucial in achieving strong perpendicular MCA.},
doi = {10.1063/1.4908141},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}