Published October 7, 2003 | Version v1
Journal article Metadata-only

Influence of annealing on the magneto-resistance effect and microstructure in the two-step oxidized FeCo/AlOx/Co tunnel junction

Creators

  • 1. Physics Department and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093 (China)
  • 2. Beijing Laboratory of Electron Microscopy, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, PO Box 603, Beijing 100080 (China)

Description

The FeCo/AlOx/Co magnetic tunnel junction was fabricated using a two-step plasma oxidation technique. The tunnelling magneto-resistance ratio of the junction as-deposited was about 8.5%, and reached 14.0% after annealing at 200 deg C. Transmission electron microscopy, high-resolution electron microscopy and electron holography were used to study the microstructure of the junction. The enhancement of the magneto-resistance effect after annealing could be attributed to the uniformity of the barrier layer, the improvement of FM/I interfaces, and the deoxidization of the bottom ferromagnetic electrode

Availability note (English)

Available online at http://stacks.iop.org/0022-3727/36/2313/d3_19_001.pdf or at the Web site for the Journal of Physics. D, Applied Physics (ISSN 1361-6463) http://www.iop.org/

Additional details

Identifiers

URL
http://stacks.iop.org/0022-3727/36/2313/d3_19_001.pdf; http://www.iop.org/;
DOI
10.1088/0022-3727/36/19/001;
PII
S0022-3727(03)64359-7;

Publishing Information

Journal Title
Journal of Physics. D, Applied Physics
Journal Volume
36
Journal Issue
19
Journal Page Range
p. 2313-2316
ISSN
0022-3727
CODEN
JPAPBE

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
35028686
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE;
Descriptors DEI
ALUMINIUM OXIDES; ANNEALING; COBALT COMPOUNDS; FERROMAGNETIC MATERIALS; IRON COMPOUNDS; MAGNETORESISTANCE; MICROSTRUCTURE; OXIDATION; SUPERCONDUCTING JUNCTIONS; TUNNEL EFFECT
Descriptors DEC
ALUMINIUM COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; HEAT TREATMENTS; MAGNETIC MATERIALS; MATERIALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; TRANSITION ELEMENT COMPOUNDS