Observation of suppressed interdiffusion in FeRh/FePt-Ta bilayer thin films

Sung Uk Jang; Eon Byeong Park; Ji Hong Kim; Ki Hoon Park; Ji Sung Lee; Young Keun Kim; Seungmin Hyun; Hak Joo Lee; Soon Ju Kwon; Hwan Soo Lee

doi:10.1109/TMAG.2010.2042148

Observation of suppressed interdiffusion in FeRh/FePt-Ta bilayer thin films

Sung Uk Jang
, Eon Byeong Park
, Ji Hong Kim
, Ki Hoon Park
, Ji Sung Lee
, Young Keun Kim
, Seungmin Hyun
, Hak Joo Lee
, Soon Ju Kwon^*
, Hwan Soo Lee

^*Corresponding author for this work

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

1 Citation (Scopus)

Abstract

FeRh/FePt bilayers on MgO (100) substrates were fabricated by rf-magnetron sputtering, and the magnetic properties and microstructures of the bilayers were studied in terms of Ta addition to the storage layer. Compared to undoped FeRh/FePt bilayers, FeRh/FePt-Ta bilayer films showed improved magnetic properties and lower degree of interdiffusion. The FeRh/FePt-Ta bilayers clearly demonstrated the AFM-FM transition. Reduced interdiffusion by Ta segregation along grain boundaries was speculated to be a possible cause for the observed improvement in magnetic properties when fabricated at high temperature.

Original language	English
Article number	5467680
Pages (from-to)	2104-2107
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	46
Issue number	6
DOIs	https://doi.org/10.1109/TMAG.2010.2042148
Publication status	Published - 2010 Jun

Bibliographical note

Funding Information:
ACKNOWLEDGMENT This work was supported in part by Center for Nanoscale Mechatronics and Manufacturing under Grant 07-K1401-00910, one of the 21th Century Frontier Research Programs which are supported by the Ministry of Science and Technology, Korea.

Keywords

FePt-Ta
FeRh/FePt-Ta bilayer
Ferromagnetic and antiferromagentic transition
Interdiffusion

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.2010.2042148

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title = "Observation of suppressed interdiffusion in FeRh/FePt-Ta bilayer thin films",

abstract = "FeRh/FePt bilayers on MgO (100) substrates were fabricated by rf-magnetron sputtering, and the magnetic properties and microstructures of the bilayers were studied in terms of Ta addition to the storage layer. Compared to undoped FeRh/FePt bilayers, FeRh/FePt-Ta bilayer films showed improved magnetic properties and lower degree of interdiffusion. The FeRh/FePt-Ta bilayers clearly demonstrated the AFM-FM transition. Reduced interdiffusion by Ta segregation along grain boundaries was speculated to be a possible cause for the observed improvement in magnetic properties when fabricated at high temperature.",

keywords = "FePt-Ta, FeRh/FePt-Ta bilayer, Ferromagnetic and antiferromagentic transition, Interdiffusion",

author = "Jang, \{Sung Uk\} and Park, \{Eon Byeong\} and Kim, \{Ji Hong\} and Park, \{Ki Hoon\} and Lee, \{Ji Sung\} and Kim, \{Young Keun\} and Seungmin Hyun and Lee, \{Hak Joo\} and Kwon, \{Soon Ju\} and Lee, \{Hwan Soo\}",

note = "Funding Information: ACKNOWLEDGMENT This work was supported in part by Center for Nanoscale Mechatronics and Manufacturing under Grant 07-K1401-00910, one of the 21th Century Frontier Research Programs which are supported by the Ministry of Science and Technology, Korea.",

year = "2010",

month = jun,

doi = "10.1109/TMAG.2010.2042148",

language = "English",

volume = "46",

pages = "2104--2107",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

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TY - JOUR

T1 - Observation of suppressed interdiffusion in FeRh/FePt-Ta bilayer thin films

AU - Jang, Sung Uk

AU - Park, Eon Byeong

AU - Kim, Ji Hong

AU - Park, Ki Hoon

AU - Lee, Ji Sung

AU - Kim, Young Keun

AU - Hyun, Seungmin

AU - Lee, Hak Joo

AU - Kwon, Soon Ju

AU - Lee, Hwan Soo

N1 - Funding Information: ACKNOWLEDGMENT This work was supported in part by Center for Nanoscale Mechatronics and Manufacturing under Grant 07-K1401-00910, one of the 21th Century Frontier Research Programs which are supported by the Ministry of Science and Technology, Korea.

PY - 2010/6

Y1 - 2010/6

N2 - FeRh/FePt bilayers on MgO (100) substrates were fabricated by rf-magnetron sputtering, and the magnetic properties and microstructures of the bilayers were studied in terms of Ta addition to the storage layer. Compared to undoped FeRh/FePt bilayers, FeRh/FePt-Ta bilayer films showed improved magnetic properties and lower degree of interdiffusion. The FeRh/FePt-Ta bilayers clearly demonstrated the AFM-FM transition. Reduced interdiffusion by Ta segregation along grain boundaries was speculated to be a possible cause for the observed improvement in magnetic properties when fabricated at high temperature.

AB - FeRh/FePt bilayers on MgO (100) substrates were fabricated by rf-magnetron sputtering, and the magnetic properties and microstructures of the bilayers were studied in terms of Ta addition to the storage layer. Compared to undoped FeRh/FePt bilayers, FeRh/FePt-Ta bilayer films showed improved magnetic properties and lower degree of interdiffusion. The FeRh/FePt-Ta bilayers clearly demonstrated the AFM-FM transition. Reduced interdiffusion by Ta segregation along grain boundaries was speculated to be a possible cause for the observed improvement in magnetic properties when fabricated at high temperature.

KW - FePt-Ta

KW - FeRh/FePt-Ta bilayer

KW - Ferromagnetic and antiferromagentic transition

KW - Interdiffusion

UR - https://www.scopus.com/pages/publications/77952869117

U2 - 10.1109/TMAG.2010.2042148

DO - 10.1109/TMAG.2010.2042148

M3 - Article

AN - SCOPUS:77952869117

SN - 0018-9464

VL - 46

SP - 2104

EP - 2107

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 6

M1 - 5467680

ER -

Observation of suppressed interdiffusion in FeRh/FePt-Ta bilayer thin films

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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