Magnetic properties of Ag/Co/Pt(1 1 1) ultrathin films

C. W. Su; F. C. Chen; Y. E. Wu; C. S. Shern

doi:10.1016/S0039-6028(02)01291-8

Magnetic properties of Ag/Co/Pt(1 1 1) ultrathin films

C. W. Su, F. C. Chen, Y. E. Wu, C. S. Shern^*

^*Corresponding author for this work

Department of Physics

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

2 Citations (Scopus)

Abstract

The magnetic anisotropy of Ag/Co/Pt(1 1 1) ultrathin films was studied by the surface magneto-optic Kerr effect. Some interesting magnetic properties were observed. The location of Ag atoms on Co sites seems to prevent the spin reversal of Co. The saturated magnetization is not significantly changed after Ag ultrathin films are deposited on the Co/Pt(1 1 1) surfaces. The Curie temperatures increase after the Ag ultrathin film deposition. During thermal annealing, the out-of-plane magnetization in the Ag capped films is enhanced dramatically. The structural changes and the evolution of the chemical composition at the interfaces during the annealing were studied by low-energy electron diffraction and Auger electron spectroscopy, respectively. The giant enhancement of the out-of-plane magnetization is due to the formation of Co-Pt alloy and Ag overlayer improving the interface structure.

Original language	English
Pages (from-to)	492-497
Number of pages	6
Journal	Surface Science
Volume	507-510
DOIs	https://doi.org/10.1016/S0039-6028(02)01291-8
Publication status	Published - 2002 Jun

Keywords

Alloys
Auger electron spectroscopy
Cobalt
Low energy electron diffraction (LEED)
Magnetic interfaces
Platinum
Silver

ASJC Scopus subject areas

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

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10.1016/S0039-6028(02)01291-8

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@article{8bec2b9f1b4e4e8e9c7d70a82b0233a3,

title = "Magnetic properties of Ag/Co/Pt(1 1 1) ultrathin films",

abstract = "The magnetic anisotropy of Ag/Co/Pt(1 1 1) ultrathin films was studied by the surface magneto-optic Kerr effect. Some interesting magnetic properties were observed. The location of Ag atoms on Co sites seems to prevent the spin reversal of Co. The saturated magnetization is not significantly changed after Ag ultrathin films are deposited on the Co/Pt(1 1 1) surfaces. The Curie temperatures increase after the Ag ultrathin film deposition. During thermal annealing, the out-of-plane magnetization in the Ag capped films is enhanced dramatically. The structural changes and the evolution of the chemical composition at the interfaces during the annealing were studied by low-energy electron diffraction and Auger electron spectroscopy, respectively. The giant enhancement of the out-of-plane magnetization is due to the formation of Co-Pt alloy and Ag overlayer improving the interface structure.",

keywords = "Alloys, Auger electron spectroscopy, Cobalt, Low energy electron diffraction (LEED), Magnetic interfaces, Platinum, Silver",

author = "Su, {C. W.} and Chen, {F. C.} and Wu, {Y. E.} and Shern, {C. S.}",

note = "Funding Information: This research was supported by the National Science Council of ROC under grant no. NSC 89-2112-M-003-039.",

year = "2002",

month = jun,

doi = "10.1016/S0039-6028(02)01291-8",

language = "English",

volume = "507-510",

pages = "492--497",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier",

}

TY - JOUR

T1 - Magnetic properties of Ag/Co/Pt(1 1 1) ultrathin films

AU - Su, C. W.

AU - Chen, F. C.

AU - Wu, Y. E.

AU - Shern, C. S.

N1 - Funding Information: This research was supported by the National Science Council of ROC under grant no. NSC 89-2112-M-003-039.

PY - 2002/6

Y1 - 2002/6

N2 - The magnetic anisotropy of Ag/Co/Pt(1 1 1) ultrathin films was studied by the surface magneto-optic Kerr effect. Some interesting magnetic properties were observed. The location of Ag atoms on Co sites seems to prevent the spin reversal of Co. The saturated magnetization is not significantly changed after Ag ultrathin films are deposited on the Co/Pt(1 1 1) surfaces. The Curie temperatures increase after the Ag ultrathin film deposition. During thermal annealing, the out-of-plane magnetization in the Ag capped films is enhanced dramatically. The structural changes and the evolution of the chemical composition at the interfaces during the annealing were studied by low-energy electron diffraction and Auger electron spectroscopy, respectively. The giant enhancement of the out-of-plane magnetization is due to the formation of Co-Pt alloy and Ag overlayer improving the interface structure.

AB - The magnetic anisotropy of Ag/Co/Pt(1 1 1) ultrathin films was studied by the surface magneto-optic Kerr effect. Some interesting magnetic properties were observed. The location of Ag atoms on Co sites seems to prevent the spin reversal of Co. The saturated magnetization is not significantly changed after Ag ultrathin films are deposited on the Co/Pt(1 1 1) surfaces. The Curie temperatures increase after the Ag ultrathin film deposition. During thermal annealing, the out-of-plane magnetization in the Ag capped films is enhanced dramatically. The structural changes and the evolution of the chemical composition at the interfaces during the annealing were studied by low-energy electron diffraction and Auger electron spectroscopy, respectively. The giant enhancement of the out-of-plane magnetization is due to the formation of Co-Pt alloy and Ag overlayer improving the interface structure.

KW - Alloys

KW - Auger electron spectroscopy

KW - Cobalt

KW - Low energy electron diffraction (LEED)

KW - Magnetic interfaces

KW - Platinum

KW - Silver

UR - http://www.scopus.com/inward/record.url?scp=0036608947&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036608947&partnerID=8YFLogxK

U2 - 10.1016/S0039-6028(02)01291-8

DO - 10.1016/S0039-6028(02)01291-8

M3 - Article

AN - SCOPUS:0036608947

SN - 0039-6028

VL - 507-510

SP - 492

EP - 497

JO - Surface Science

JF - Surface Science

ER -

Magnetic properties of Ag/Co/Pt(1 1 1) ultrathin films

Abstract

Keywords

ASJC Scopus subject areas

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