INVESTIGATION OF HIGH-COERCIVITY FePt-C NANOGRANULAR FILMS FOR PERPENDICULAR MAGNETIC RECORDING (PMR) MEDIA-Reference-Cited by-同舟云学术

INVESTIGATION OF HIGH-COERCIVITY FePt-C NANOGRANULAR FILMS FOR PERPENDICULAR MAGNETIC RECORDING (PMR) MEDIA

Published:2011-12 Issue:06 Volume:06 Page:569-574
ISSN:1793-2920
Container-title:Nano
language:en
Short-container-title:NANO

Author:

PENG JIEGANG¹,XUE S.²,YAN Z.³,WU X.⁴,ZHAN L.⁴

Affiliation:

1. School of Automation Engineering, University of Electronic Science and Technology of China, Chengdu 610054, P. R. China

2. Department of Physics, Zhanjiang Normal College, Zhanjiang 524048, P. R. China

3. Department of Material Engineering, Shanghai University of Engineering Science, Shanghai 201600, P. R. China

4. School of Applied Physics, University of Electronic Science and Technology of China Chengdu 610054, P. R. China

Abstract

In this work, we studied FePt-C nanogranular films for ultrahigh-density perpendicular recording media towards 1 Tbits/in2 because they have high magnetocrystalline anisotropy at its L10-phase. We deposit Fe 52 Pt 48- C 50% (7.2 nm) films on oxidized silicon substrates at 400°C and various Ar pressures. Results show that at the Ar pressure of 0.50 Pa, the FePt-C granular film has the best granular structure and MH loop shape with a perpendicular coercivity of 20 kOe. The average grain size of the optimized film is 6.4 ± 1.5 nm. We studied the thermal stability of the optimized film and obtained the energy barrier Eb of 340kBT at room temperature, meaning excellent thermal stability as magnetic recording media.

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,General Materials Science

Link

https://www.worldscientific.com/doi/pdf/10.1142/S179329201100286X

Reference16 articles.

1. Fabrication of nonepitaxially grown double-layered FePt:C/FeCoNi thin films for perpendicular recording

2. Reduction of ordering temperature of an FePt-ordered alloy by addition of Cu

3. Effect of Substrate Temperature on Microstructure and Magnetic Properties of Single-Layered FePt Films

4. L10-ordered high coercivity (FePt)Ag–C granular thin films for perpendicular recording

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