Magnetic hardening in FePt nanostructured films

J. P. Liu, Y. Liu, C. P. Luo, Z. S. Shan, D. J. Sellmyer

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

FePt films have been prepared by sputtering Fe/Pt multilayers onto glass or silicon substrates. The thickness of the Fe and Pt layers was adjusted with the Fe:Pt atomic ratio from about 1:1 to 2:1. Magnetic hardening is observed after heat treatment at elevated temperatures, which led to coercivity values exceeding 20 kOe in samples with an Fe:Pt ratio around 1.2:1. The hardening originates from the formation of the tetragonal FePt phase with high magnetocrystalline anisotropy and a favorable microstructure. Two-phase composite films containing hard and soft phases were obtained when the Fe:Pt ratio increased. Under optimized processing conditions, composite films with energy products larger than 30 MG Oe at room temperature have been successfully produced.

Original languageEnglish (US)
Pages (from-to)5644-5646
Number of pages3
JournalJournal of Applied Physics
Volume81
Issue number8 PART 2B
StatePublished - Apr 15 1997

Fingerprint

hardening
composite materials
coercivity
heat treatment
sputtering
microstructure
anisotropy
glass
silicon
room temperature
products
temperature
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Liu, J. P., Liu, Y., Luo, C. P., Shan, Z. S., & Sellmyer, D. J. (1997). Magnetic hardening in FePt nanostructured films. Journal of Applied Physics, 81(8 PART 2B), 5644-5646.

Magnetic hardening in FePt nanostructured films. / Liu, J. P.; Liu, Y.; Luo, C. P.; Shan, Z. S.; Sellmyer, D. J.

In: Journal of Applied Physics, Vol. 81, No. 8 PART 2B, 15.04.1997, p. 5644-5646.

Research output: Contribution to journalArticle

Liu, JP, Liu, Y, Luo, CP, Shan, ZS & Sellmyer, DJ 1997, 'Magnetic hardening in FePt nanostructured films', Journal of Applied Physics, vol. 81, no. 8 PART 2B, pp. 5644-5646.
Liu JP, Liu Y, Luo CP, Shan ZS, Sellmyer DJ. Magnetic hardening in FePt nanostructured films. Journal of Applied Physics. 1997 Apr 15;81(8 PART 2B):5644-5646.
Liu, J. P. ; Liu, Y. ; Luo, C. P. ; Shan, Z. S. ; Sellmyer, D. J. / Magnetic hardening in FePt nanostructured films. In: Journal of Applied Physics. 1997 ; Vol. 81, No. 8 PART 2B. pp. 5644-5646.
@article{bafd406852ec4e9789fca8106b77340b,
title = "Magnetic hardening in FePt nanostructured films",
abstract = "FePt films have been prepared by sputtering Fe/Pt multilayers onto glass or silicon substrates. The thickness of the Fe and Pt layers was adjusted with the Fe:Pt atomic ratio from about 1:1 to 2:1. Magnetic hardening is observed after heat treatment at elevated temperatures, which led to coercivity values exceeding 20 kOe in samples with an Fe:Pt ratio around 1.2:1. The hardening originates from the formation of the tetragonal FePt phase with high magnetocrystalline anisotropy and a favorable microstructure. Two-phase composite films containing hard and soft phases were obtained when the Fe:Pt ratio increased. Under optimized processing conditions, composite films with energy products larger than 30 MG Oe at room temperature have been successfully produced.",
author = "Liu, {J. P.} and Y. Liu and Luo, {C. P.} and Shan, {Z. S.} and Sellmyer, {D. J.}",
year = "1997",
month = "4",
day = "15",
language = "English (US)",
volume = "81",
pages = "5644--5646",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "8 PART 2B",

}

TY - JOUR

T1 - Magnetic hardening in FePt nanostructured films

AU - Liu, J. P.

AU - Liu, Y.

AU - Luo, C. P.

AU - Shan, Z. S.

AU - Sellmyer, D. J.

PY - 1997/4/15

Y1 - 1997/4/15

N2 - FePt films have been prepared by sputtering Fe/Pt multilayers onto glass or silicon substrates. The thickness of the Fe and Pt layers was adjusted with the Fe:Pt atomic ratio from about 1:1 to 2:1. Magnetic hardening is observed after heat treatment at elevated temperatures, which led to coercivity values exceeding 20 kOe in samples with an Fe:Pt ratio around 1.2:1. The hardening originates from the formation of the tetragonal FePt phase with high magnetocrystalline anisotropy and a favorable microstructure. Two-phase composite films containing hard and soft phases were obtained when the Fe:Pt ratio increased. Under optimized processing conditions, composite films with energy products larger than 30 MG Oe at room temperature have been successfully produced.

AB - FePt films have been prepared by sputtering Fe/Pt multilayers onto glass or silicon substrates. The thickness of the Fe and Pt layers was adjusted with the Fe:Pt atomic ratio from about 1:1 to 2:1. Magnetic hardening is observed after heat treatment at elevated temperatures, which led to coercivity values exceeding 20 kOe in samples with an Fe:Pt ratio around 1.2:1. The hardening originates from the formation of the tetragonal FePt phase with high magnetocrystalline anisotropy and a favorable microstructure. Two-phase composite films containing hard and soft phases were obtained when the Fe:Pt ratio increased. Under optimized processing conditions, composite films with energy products larger than 30 MG Oe at room temperature have been successfully produced.

UR - http://www.scopus.com/inward/record.url?scp=0000309911&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000309911&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0000309911

VL - 81

SP - 5644

EP - 5646

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 8 PART 2B

ER -