Effect of growth temperature on Curie temperature of magnetic ultrathin films Co/Cu(100)

C. C. Kuo; W. C. Lin; C. L. Chiu; H. L. Huang; Minn Tsong Lin

doi:10.1063/1.1358827

Effect of growth temperature on Curie temperature of magnetic ultrathin films Co/Cu(100)

C. C. Kuo, W. C. Lin, C. L. Chiu, H. L. Huang, Minn Tsong Lin^*

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

6 Citations (Scopus)

Abstract

The magnetic and structural properties were investigated for the 2 ML Co/Cu(100) films grown at various temperatures from 125 to 350 K. By precisely controlling the film thickness, the influence of thickness on Curie temperature (T_C) due to the finite size effect can be excluded. The Curie temperature of the 2 ML Co keeps almost invariant for the growth temperature (T_g) below 250 K, and drops drastically at T_g, higher than 275 K. For T_g = 340 K, T_C dropped to 170 K which is only about half of 325 K for T_g = 125 K. Accompanied with the increase of T_C for the films grown at lower temperatures, the remanent Kerr signal as well as coercivity were enhanced. According to a simple theoretical estimation, the change of T_C due to the variation of the magnetization and anisotropy was found to be consistent with the experimental results. The enhancement in T_C or magnetization and anisotropy with various T_g should be traced back to the presence of island growth in the films grown at lower temperatures.

Original language	English
Pages (from-to)	7153-7155
Number of pages	3
Journal	Journal of Applied Physics
Volume	89
Issue number	11 II
DOIs	https://doi.org/10.1063/1.1358827
Publication status	Published - 2001 Jun 1
Externally published	Yes
Event	8th Joint Magnetism and Magnetic Materials-Intermag Conference - San Antonio, TX, United States Duration: 2001 Jan 7 → 2001 Jan 11

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.1358827

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@article{90bf3a47e6014347a24db0b6737018de,

title = "Effect of growth temperature on Curie temperature of magnetic ultrathin films Co/Cu(100)",

abstract = "The magnetic and structural properties were investigated for the 2 ML Co/Cu(100) films grown at various temperatures from 125 to 350 K. By precisely controlling the film thickness, the influence of thickness on Curie temperature (TC) due to the finite size effect can be excluded. The Curie temperature of the 2 ML Co keeps almost invariant for the growth temperature (Tg) below 250 K, and drops drastically at Tg, higher than 275 K. For Tg = 340 K, TC dropped to 170 K which is only about half of 325 K for Tg = 125 K. Accompanied with the increase of TC for the films grown at lower temperatures, the remanent Kerr signal as well as coercivity were enhanced. According to a simple theoretical estimation, the change of TC due to the variation of the magnetization and anisotropy was found to be consistent with the experimental results. The enhancement in TC or magnetization and anisotropy with various Tg should be traced back to the presence of island growth in the films grown at lower temperatures.",

author = "Kuo, {C. C.} and Lin, {W. C.} and Chiu, {C. L.} and Huang, {H. L.} and Lin, {Minn Tsong}",

year = "2001",

month = jun,

day = "1",

doi = "10.1063/1.1358827",

language = "English",

volume = "89",

pages = "7153--7155",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics Publising LLC",

number = "11 II",

note = "8th Joint Magnetism and Magnetic Materials-Intermag Conference ; Conference date: 07-01-2001 Through 11-01-2001",

}

TY - JOUR

T1 - Effect of growth temperature on Curie temperature of magnetic ultrathin films Co/Cu(100)

AU - Kuo, C. C.

AU - Lin, W. C.

AU - Chiu, C. L.

AU - Huang, H. L.

AU - Lin, Minn Tsong

PY - 2001/6/1

Y1 - 2001/6/1

N2 - The magnetic and structural properties were investigated for the 2 ML Co/Cu(100) films grown at various temperatures from 125 to 350 K. By precisely controlling the film thickness, the influence of thickness on Curie temperature (TC) due to the finite size effect can be excluded. The Curie temperature of the 2 ML Co keeps almost invariant for the growth temperature (Tg) below 250 K, and drops drastically at Tg, higher than 275 K. For Tg = 340 K, TC dropped to 170 K which is only about half of 325 K for Tg = 125 K. Accompanied with the increase of TC for the films grown at lower temperatures, the remanent Kerr signal as well as coercivity were enhanced. According to a simple theoretical estimation, the change of TC due to the variation of the magnetization and anisotropy was found to be consistent with the experimental results. The enhancement in TC or magnetization and anisotropy with various Tg should be traced back to the presence of island growth in the films grown at lower temperatures.

AB - The magnetic and structural properties were investigated for the 2 ML Co/Cu(100) films grown at various temperatures from 125 to 350 K. By precisely controlling the film thickness, the influence of thickness on Curie temperature (TC) due to the finite size effect can be excluded. The Curie temperature of the 2 ML Co keeps almost invariant for the growth temperature (Tg) below 250 K, and drops drastically at Tg, higher than 275 K. For Tg = 340 K, TC dropped to 170 K which is only about half of 325 K for Tg = 125 K. Accompanied with the increase of TC for the films grown at lower temperatures, the remanent Kerr signal as well as coercivity were enhanced. According to a simple theoretical estimation, the change of TC due to the variation of the magnetization and anisotropy was found to be consistent with the experimental results. The enhancement in TC or magnetization and anisotropy with various Tg should be traced back to the presence of island growth in the films grown at lower temperatures.

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U2 - 10.1063/1.1358827

DO - 10.1063/1.1358827

M3 - Conference article

AN - SCOPUS:0035356122

SN - 0021-8979

VL - 89

SP - 7153

EP - 7155

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 11 II

T2 - 8th Joint Magnetism and Magnetic Materials-Intermag Conference

Y2 - 7 January 2001 through 11 January 2001

ER -

Effect of growth temperature on Curie temperature of magnetic ultrathin films Co/Cu(100)

Abstract

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