Published October 28, 2015 | Version v1
Journal article Metadata-only

Enhancement of current-perpendicular-to-plane giant magnetoresistance in Heusler-alloy based pseudo spin valves by using a CuZn spacer layer

Creators

  • 1. National Institute for Materials Science, Tsukuba 305-0047 (Japan)

Description

Enhancement of magnetoresistance output was attained in current-perpendicular-to-plane giant magnetoresistance (CPP-GMR) devices by using a bcc CuZn alloy for the spacer. Pseudo spin valves that consisted of the Co2Fe(Ga0.5Ge0.5) Heusler alloy for ferromagnetic layers and CuZn alloy with the composition of Cu52.4Zn47.6 for a spacer showed the large change of the resistance-area products, ΔRA, up to 8 mΩ·μm2 for a low annealing temperature of 350 °C. The ΔRA value is one of the highest reported so far for the CPP-GMR devices for the low annealing temperature, which is essential for processing read heads for hard disk drives. We consider that the enhancement of ΔRA is produced from the spin-dependent resistance at the Co2Fe(Ga0.5Ge0.5)/CuZn interfaces

Additional details

Identifiers

DOI
10.1063/1.4933397;

Publishing Information

Journal Title
Journal of Applied Physics
Journal Volume
118
Journal Issue
16
Journal Page Range
p. 163901-163901.6
ISSN
0021-8979
CODEN
JAPIAU

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
47062981
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
ANNEALING; BCC LATTICES; HEUSLER ALLOYS; LAYERS; MAGNETIC DISKS; MAGNETORESISTANCE; SPIN; VALVES
Descriptors DEC
ALLOYS; ALUMINIUM ALLOYS; ANGULAR MOMENTUM; CONTROL EQUIPMENT; COPPER ALLOYS; COPPER BASE ALLOYS; CORROSION RESISTANT ALLOYS; CRYSTAL LATTICES; CRYSTAL STRUCTURE; CUBIC LATTICES; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; EQUIPMENT; FLOW REGULATORS; HEAT TREATMENTS; MAGNETIC STORAGE DEVICES; MANGANESE ALLOYS; MEMORY DEVICES; PARTICLE PROPERTIES; PHYSICAL PROPERTIES; THREE-DIMENSIONAL LATTICES; TRANSITION ELEMENT ALLOYS

Optional Information

Notes
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