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^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	121-127
Number of pages	7
Journal	Surface Science
Volume	520
Issue number	3
DOIs	https://doi.org/10.1016/S0039-6028(02)02304-X
Publication status	Published - 2002 Dec 21
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1016/S0039-6028(02)02304-X

Cite this

@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,

day = "21",

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

language = "English",

volume = "520",

pages = "121--127",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier",

number = "3",

}

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

UR - http://www.scopus.com/inward/record.url?scp=0037153657&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037153657&partnerID=8YFLogxK

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

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this