Enhancement in Magnetic Anisotropy for hcp-Structured Co Alloy Thin Films Through Pt Addition

W. K. Shen; Jack H. Judy; Jian Ping Wang; Anirban Das; Michael Racine; Randy Cheng

doi:10.1109/TMAG.2006.878422

Enhancement in Magnetic Anisotropy for hcp-Structured Co Alloy Thin Films Through Pt Addition

W. K. Shen
, Jack H. Judy
, Jian Ping Wang
, Anirban Das
, Michael Racine
, Randy Cheng

Electrical and Computer Engineering

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

6 Scopus citations

Abstract

The addition effects of Pt in the (0002) Ru underlayer were studied. It was found that the lattice parameter can be tuned as desired through Pt addition in a (0002)-oriented Ru layer. The out-of-plane and in-plane lattice parameter of the RuPt can be increased by 2.3% and 0.44%, respectively. No phase segregation was apparently observed in RuPt films under these process conditions even with a very high Pt content (39%). The RuPt layer thus provides a good template layer to study the Pt addition effects in (0002)-textured hcp Co alloy perpendicular media with a very wide range of Pt content. CoCrPt-SiO₂ films were deposited with a Pt addition level varying from 15% to 40% on an optimally designed RuPt underlayer. The magnetic results showed that H_k, H_c, K_u reached a plateau at about 19%-23% Pt content. The maximum values for H_k, H_c, and K_u are 16.0 kOe, 6.6 kOe, and 3.1 x 10⁶ erg/cm³, respectively.

Original language	English (US)
Pages (from-to)	2945-2947
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	42
Issue number	10
DOIs	https://doi.org/10.1109/TMAG.2006.878422
State	Published - Oct 2006

Keywords

Co alloy
CoCrPt-SiO2 perpendicular media
Pt addition
Ru underlayer
RuPt underlayer
X-ray diffraction

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10.1109/TMAG.2006.878422

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@article{cda02364ec614ab686bf338acc850212,

title = "Enhancement in Magnetic Anisotropy for hcp-Structured Co Alloy Thin Films Through Pt Addition",

abstract = "The addition effects of Pt in the (0002) Ru underlayer were studied. It was found that the lattice parameter can be tuned as desired through Pt addition in a (0002)-oriented Ru layer. The out-of-plane and in-plane lattice parameter of the RuPt can be increased by 2.3\% and 0.44\%, respectively. No phase segregation was apparently observed in RuPt films under these process conditions even with a very high Pt content (39\%). The RuPt layer thus provides a good template layer to study the Pt addition effects in (0002)-textured hcp Co alloy perpendicular media with a very wide range of Pt content. CoCrPt-SiO2 films were deposited with a Pt addition level varying from 15\% to 40\% on an optimally designed RuPt underlayer. The magnetic results showed that Hk, Hc, Ku reached a plateau at about 19\%-23\% Pt content. The maximum values for Hk, Hc, and Ku are 16.0 kOe, 6.6 kOe, and 3.1 x 106 erg/cm3, respectively.",

keywords = "Co alloy, CoCrPt-SiO2 perpendicular media, Pt addition, Ru underlayer, RuPt underlayer, X-ray diffraction",

author = "Shen, \{W. K.\} and Judy, \{Jack H.\} and Wang, \{Jian Ping\} and Anirban Das and Michael Racine and Randy Cheng",

year = "2006",

month = oct,

doi = "10.1109/TMAG.2006.878422",

language = "English (US)",

volume = "42",

pages = "2945--2947",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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TY - JOUR

T1 - Enhancement in Magnetic Anisotropy for hcp-Structured Co Alloy Thin Films Through Pt Addition

AU - Shen, W. K.

AU - Judy, Jack H.

AU - Wang, Jian Ping

AU - Das, Anirban

AU - Racine, Michael

AU - Cheng, Randy

PY - 2006/10

Y1 - 2006/10

N2 - The addition effects of Pt in the (0002) Ru underlayer were studied. It was found that the lattice parameter can be tuned as desired through Pt addition in a (0002)-oriented Ru layer. The out-of-plane and in-plane lattice parameter of the RuPt can be increased by 2.3% and 0.44%, respectively. No phase segregation was apparently observed in RuPt films under these process conditions even with a very high Pt content (39%). The RuPt layer thus provides a good template layer to study the Pt addition effects in (0002)-textured hcp Co alloy perpendicular media with a very wide range of Pt content. CoCrPt-SiO2 films were deposited with a Pt addition level varying from 15% to 40% on an optimally designed RuPt underlayer. The magnetic results showed that Hk, Hc, Ku reached a plateau at about 19%-23% Pt content. The maximum values for Hk, Hc, and Ku are 16.0 kOe, 6.6 kOe, and 3.1 x 106 erg/cm3, respectively.

AB - The addition effects of Pt in the (0002) Ru underlayer were studied. It was found that the lattice parameter can be tuned as desired through Pt addition in a (0002)-oriented Ru layer. The out-of-plane and in-plane lattice parameter of the RuPt can be increased by 2.3% and 0.44%, respectively. No phase segregation was apparently observed in RuPt films under these process conditions even with a very high Pt content (39%). The RuPt layer thus provides a good template layer to study the Pt addition effects in (0002)-textured hcp Co alloy perpendicular media with a very wide range of Pt content. CoCrPt-SiO2 films were deposited with a Pt addition level varying from 15% to 40% on an optimally designed RuPt underlayer. The magnetic results showed that Hk, Hc, Ku reached a plateau at about 19%-23% Pt content. The maximum values for Hk, Hc, and Ku are 16.0 kOe, 6.6 kOe, and 3.1 x 106 erg/cm3, respectively.

KW - Co alloy

KW - CoCrPt-SiO2 perpendicular media

KW - Pt addition

KW - Ru underlayer

KW - RuPt underlayer

KW - X-ray diffraction

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UR - https://www.scopus.com/pages/publications/77956323685#tab=citedBy

U2 - 10.1109/TMAG.2006.878422

DO - 10.1109/TMAG.2006.878422

M3 - Article

AN - SCOPUS:77956323685

SN - 0018-9464

VL - 42

SP - 2945

EP - 2947

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 10

ER -

Enhancement in Magnetic Anisotropy for hcp-Structured Co Alloy Thin Films Through Pt Addition

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