Microstructure analysis of a SmCo/Fe exchange spring bilayer

Yuzi Liu; Y. Q. Wu; M. J. Kramer; Y. Choi; J. S. Jiang; Z. L. Wang; J. P. Liu

doi:10.1063/1.2978325

Microstructure analysis of a SmCo/Fe exchange spring bilayer

Yuzi Liu, Y. Q. Wu, M. J. Kramer, Y. Choi, J. S. Jiang, Z. L. Wang, J. P. Liu

Research and Economic Development

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Abstract

The microstructure of a magnetron sputtered Cr(20 nm)/Sm-Co(20 nm)/Fe(20 nm)/Cr(5 nm) exchange spring magnet was studied using an advanced analytical transmission electron microscopy to better understand the relationship between its chemistry and structure to enhance the energy product. It is shown that the Fe atoms diffuse into the well textured Sm-Co layer, causing a transition from the stoichiometric Sm₂Co₇ near the Sm-Co/Cr interface to a defected Sm(Co,Fe)₅ in the Sm-Co-Fe intermixed area. The graded intermixed layer between Sm-Co and pure Fe gives rise to a compositionally enhanced energy product.

Original language	English
Article number	192502
Journal	Applied Physics Letters
Volume	93
Issue number	19
DOIs	https://doi.org/10.1063/1.2978325
State	Published - 2008

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title = "Microstructure analysis of a SmCo/Fe exchange spring bilayer",

abstract = "The microstructure of a magnetron sputtered Cr(20 nm)/Sm-Co(20 nm)/Fe(20 nm)/Cr(5 nm) exchange spring magnet was studied using an advanced analytical transmission electron microscopy to better understand the relationship between its chemistry and structure to enhance the energy product. It is shown that the Fe atoms diffuse into the well textured Sm-Co layer, causing a transition from the stoichiometric Sm2Co7 near the Sm-Co/Cr interface to a defected Sm(Co,Fe)5 in the Sm-Co-Fe intermixed area. The graded intermixed layer between Sm-Co and pure Fe gives rise to a compositionally enhanced energy product.",

author = "Yuzi Liu and Wu, {Y. Q.} and Kramer, {M. J.} and Y. Choi and Jiang, {J. S.} and Wang, {Z. L.} and Liu, {J. P.}",

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T1 - Microstructure analysis of a SmCo/Fe exchange spring bilayer

AU - Liu, Yuzi

AU - Wu, Y. Q.

AU - Kramer, M. J.

AU - Choi, Y.

AU - Jiang, J. S.

AU - Wang, Z. L.

AU - Liu, J. P.

PY - 2008

Y1 - 2008

N2 - The microstructure of a magnetron sputtered Cr(20 nm)/Sm-Co(20 nm)/Fe(20 nm)/Cr(5 nm) exchange spring magnet was studied using an advanced analytical transmission electron microscopy to better understand the relationship between its chemistry and structure to enhance the energy product. It is shown that the Fe atoms diffuse into the well textured Sm-Co layer, causing a transition from the stoichiometric Sm2Co7 near the Sm-Co/Cr interface to a defected Sm(Co,Fe)5 in the Sm-Co-Fe intermixed area. The graded intermixed layer between Sm-Co and pure Fe gives rise to a compositionally enhanced energy product.

AB - The microstructure of a magnetron sputtered Cr(20 nm)/Sm-Co(20 nm)/Fe(20 nm)/Cr(5 nm) exchange spring magnet was studied using an advanced analytical transmission electron microscopy to better understand the relationship between its chemistry and structure to enhance the energy product. It is shown that the Fe atoms diffuse into the well textured Sm-Co layer, causing a transition from the stoichiometric Sm2Co7 near the Sm-Co/Cr interface to a defected Sm(Co,Fe)5 in the Sm-Co-Fe intermixed area. The graded intermixed layer between Sm-Co and pure Fe gives rise to a compositionally enhanced energy product.

UR - http://www.scopus.com/inward/record.url?scp=56249109402&partnerID=8YFLogxK

U2 - 10.1063/1.2978325

DO - 10.1063/1.2978325

M3 - Article

AN - SCOPUS:56249109402

SN - 0003-6951

VL - 93

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 19

M1 - 192502

ER -

Microstructure analysis of a SmCo/Fe exchange spring bilayer

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