Enhanced exchange bias coupling in Fe/FexMn1-x bilayer by reducing vertical lattice constants

Wen Chin Lin, Bo Yao Wang, Te Yu Chen, Ling Chih Lin, Yu Wen Liao, Wei Pan, Nai Yeou Jih, Ker Jar Song, Minn Tsong Lin

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Abstract

The modification of crystalline structure by epitaxial growth on different single crystals induces crucial effects on the exchange bias coupling. Due to the larger lattice constant (a0) of Cu3 Au (100) (a0 =3.75 Å), the vertical lattice constants of Fe Fex Mn1-x films on Cu3 Au (100) are much smaller than those of the Fe Fex Mn1-x Cu (100) system (Cu: a0 =3.61 Å). By reducing the vertical lattice constants, the interface exchange bias coupling energy of Fe Fex Mn1-x Cu3 Au (100) is enhanced to be 0.12-0.18 erg cm2, which is approximately four times that of the Cu(100) system.

Original languageEnglish
Article number052502
JournalApplied Physics Letters
Volume90
Issue number5
DOIs
Publication statusPublished - 2007 Feb 19

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Lin, W. C., Wang, B. Y., Chen, T. Y., Lin, L. C., Liao, Y. W., Pan, W., Jih, N. Y., Song, K. J., & Lin, M. T. (2007). Enhanced exchange bias coupling in Fe/FexMn1-x bilayer by reducing vertical lattice constants. Applied Physics Letters, 90(5), [052502]. https://doi.org/10.1063/1.2435514