Dramatic depression of Curie temperature for magnetic Co/Cu(1 0 0) ultrathin films upon deposition at elevated temperature

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

doi:10.1016/S0039-6028(02)02304-X

Dramatic depression of Curie temperature for magnetic Co/Cu(1 0 0) ultrathin films upon deposition at elevated temperature

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

^*此作品的通信作者

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

13 引文斯高帕斯（Scopus）

摘要

The correlation between the crystalline structures and magnetic properties, such as magnetization and Curie temperature (T_C) were investigated systematically by varying the deposition temperature of 2 ML fcc cobalt films on Cu(100) substrate. At variation of the deposition temperature a dramatic change in Curie temperature and coercivity of the films was observed. The drastic raising of Curie temperature were found for the films with the deposition temperatures from 340 K (T_C=170 K) down to 275 K (T_C=325 K). A simple theoretical estimation was proposed to evaluate the Curie temperature of the films in terms of magnetic moment as well as anisotropy with quantitative success. The enhanced Curie temperature can be attributed to the increase of the magnetic moments due to the alteration of film morphology with various deposition temperatures.

原文	英語
頁（從 - 到）	121-127
頁數	7
期刊	Surface Science
卷	520
發行號	3
DOIs	https://doi.org/10.1016/S0039-6028(02)02304-X
出版狀態	已發佈 - 2002 12月 21
對外發佈	是

ASJC Scopus subject areas

凝聚態物理學
表面和介面
表面、塗料和薄膜
材料化學

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10.1016/S0039-6028(02)02304-X

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@article{a5d5a0c4c57744a2bd7f835e703e6530,

title = "Dramatic depression of Curie temperature for magnetic Co/Cu(1 0 0) ultrathin films upon deposition at elevated temperature",

abstract = "The correlation between the crystalline structures and magnetic properties, such as magnetization and Curie temperature (TC) were investigated systematically by varying the deposition temperature of 2 ML fcc cobalt films on Cu(100) substrate. At variation of the deposition temperature a dramatic change in Curie temperature and coercivity of the films was observed. The drastic raising of Curie temperature were found for the films with the deposition temperatures from 340 K (TC=170 K) down to 275 K (TC=325 K). A simple theoretical estimation was proposed to evaluate the Curie temperature of the films in terms of magnetic moment as well as anisotropy with quantitative success. The enhanced Curie temperature can be attributed to the increase of the magnetic moments due to the alteration of film morphology with various deposition temperatures.",

keywords = "Cobalt, Copper, Growth, Magnetic films, Surface structure, morphology, roughness, and topography",

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

note = "Funding Information: This research was granted by the National Science Council through the contract #NSC-91-2112-M-002-058 and MOE program for Promoting Academic Excellence of Universities.",

year = "2002",

month = dec,

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doi = "10.1016/S0039-6028(02)02304-X",

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journal = "Surface Science",

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TY - JOUR

T1 - Dramatic depression of Curie temperature for magnetic Co/Cu(1 0 0) ultrathin films upon deposition at elevated temperature

AU - Kuo, C. C.

AU - Chiu, C. L.

AU - Lin, W. C.

AU - Lin, Minn Tsong

N1 - Funding Information: This research was granted by the National Science Council through the contract #NSC-91-2112-M-002-058 and MOE program for Promoting Academic Excellence of Universities.

PY - 2002/12/21

Y1 - 2002/12/21

N2 - The correlation between the crystalline structures and magnetic properties, such as magnetization and Curie temperature (TC) were investigated systematically by varying the deposition temperature of 2 ML fcc cobalt films on Cu(100) substrate. At variation of the deposition temperature a dramatic change in Curie temperature and coercivity of the films was observed. The drastic raising of Curie temperature were found for the films with the deposition temperatures from 340 K (TC=170 K) down to 275 K (TC=325 K). A simple theoretical estimation was proposed to evaluate the Curie temperature of the films in terms of magnetic moment as well as anisotropy with quantitative success. The enhanced Curie temperature can be attributed to the increase of the magnetic moments due to the alteration of film morphology with various deposition temperatures.

AB - The correlation between the crystalline structures and magnetic properties, such as magnetization and Curie temperature (TC) were investigated systematically by varying the deposition temperature of 2 ML fcc cobalt films on Cu(100) substrate. At variation of the deposition temperature a dramatic change in Curie temperature and coercivity of the films was observed. The drastic raising of Curie temperature were found for the films with the deposition temperatures from 340 K (TC=170 K) down to 275 K (TC=325 K). A simple theoretical estimation was proposed to evaluate the Curie temperature of the films in terms of magnetic moment as well as anisotropy with quantitative success. The enhanced Curie temperature can be attributed to the increase of the magnetic moments due to the alteration of film morphology with various deposition temperatures.

KW - Cobalt

KW - Copper

KW - Growth

KW - Magnetic films

KW - Surface structure, morphology, roughness, and topography

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U2 - 10.1016/S0039-6028(02)02304-X

DO - 10.1016/S0039-6028(02)02304-X

M3 - Article

AN - SCOPUS:0037153657

SN - 0039-6028

VL - 520

SP - 121

EP - 127

JO - Surface Science

JF - Surface Science

IS - 3

ER -

Dramatic depression of Curie temperature for magnetic Co/Cu(1 0 0) ultrathin films upon deposition at elevated temperature

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