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Title: Thermally stable perpendicular magnetic anisotropy features of [Co/Pd]{sub m} multilayer matrix integrated with [CoO/Pd]{sub n} bottom layer

Abstract

We evaluated the perpendicular magnetic anisotropy (PMA) features of a hybrid [CoO/Pd]{sub 2}/[Co/Pd]{sub 7} multilayer (ML) matrix under annealing in which the [CoO/Pd]{sub 2} bottom layer was inserted. Annealing allowed for the diffusion of oxygen atoms existing in the inserted [CoO/Pd]{sub 2} layer, leading to an atomic structural reconfiguration event. The hybrid matrix was crucial to result in a higher effective anisotropy energy (3.40 Merg/cc) than an ordinary [Co/Pd]{sub 7} ML matrix (1.25 Merg/cc) under annealing at 450 °C. X-ray photoelectron spectroscopy confirmed the presence of Co-O bonding states and annealing dependent oxygen atom diffusion. The possible nature of the enhanced PMA features is discussed.

Authors:
; ; ;  [1];  [2]
  1. Novel Functional Materials and Device Laboratory, Department of Physics, The Research Institute for Natural Science, Hanyang University, Seoul 133-791 (Korea, Republic of)
  2. Nano Quantum Electronics Laboratory, Department of Electronics and Computer Engineering, Hanyang University, Seoul 133-791 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22275814
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 104; Journal Issue: 2; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANISOTROPY; ANNEALING; BOUND STATE; COBALT OXIDES; LAYERS; OXYGEN; PALLADIUM; X-RAY PHOTOELECTRON SPECTROSCOPY

Citation Formats

Lee, JaBin, An, GwangGuk, Yang, SeungMo, Hong, JinPyo, E-mail: jphong@hanyang.ac.kr, and Chung, WooSeong. Thermally stable perpendicular magnetic anisotropy features of [Co/Pd]{sub m} multilayer matrix integrated with [CoO/Pd]{sub n} bottom layer. United States: N. p., 2014. Web. doi:10.1063/1.4861840.
Lee, JaBin, An, GwangGuk, Yang, SeungMo, Hong, JinPyo, E-mail: jphong@hanyang.ac.kr, & Chung, WooSeong. Thermally stable perpendicular magnetic anisotropy features of [Co/Pd]{sub m} multilayer matrix integrated with [CoO/Pd]{sub n} bottom layer. United States. doi:10.1063/1.4861840.
Lee, JaBin, An, GwangGuk, Yang, SeungMo, Hong, JinPyo, E-mail: jphong@hanyang.ac.kr, and Chung, WooSeong. Mon . "Thermally stable perpendicular magnetic anisotropy features of [Co/Pd]{sub m} multilayer matrix integrated with [CoO/Pd]{sub n} bottom layer". United States. doi:10.1063/1.4861840.
@article{osti_22275814,
title = {Thermally stable perpendicular magnetic anisotropy features of [Co/Pd]{sub m} multilayer matrix integrated with [CoO/Pd]{sub n} bottom layer},
author = {Lee, JaBin and An, GwangGuk and Yang, SeungMo and Hong, JinPyo, E-mail: jphong@hanyang.ac.kr and Chung, WooSeong},
abstractNote = {We evaluated the perpendicular magnetic anisotropy (PMA) features of a hybrid [CoO/Pd]{sub 2}/[Co/Pd]{sub 7} multilayer (ML) matrix under annealing in which the [CoO/Pd]{sub 2} bottom layer was inserted. Annealing allowed for the diffusion of oxygen atoms existing in the inserted [CoO/Pd]{sub 2} layer, leading to an atomic structural reconfiguration event. The hybrid matrix was crucial to result in a higher effective anisotropy energy (3.40 Merg/cc) than an ordinary [Co/Pd]{sub 7} ML matrix (1.25 Merg/cc) under annealing at 450 °C. X-ray photoelectron spectroscopy confirmed the presence of Co-O bonding states and annealing dependent oxygen atom diffusion. The possible nature of the enhanced PMA features is discussed.},
doi = {10.1063/1.4861840},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 2,
volume = 104,
place = {United States},
year = {2014},
month = {1}
}