Giant Drop of Magnetic Hysteresis with Decreasing Thickness of Cr-Buffer Layer of CoFe/Cu Superlattices

Author:

Milyaev M.A.1,Naumova L.I.1,Proglyado V.V.1,Krinitsina T.P.1,Bannikova N.S.1,Ustinov V.V.1

Affiliation:

1. Ural Division of Russian Academy of Sciences

Abstract

The effect of Cr-buffer-layer thickness on the structure, giant magnetoresistance, and coercivity of DC sputtered Cr(tCr)/[Co90Fe10(15Å)/Cu(23Å)]8/Cr(10Å) superlattices has been investigated. A drastic change of hysteresis in a short interval of the buffer layer thickness (15 ÷ 20 Å) has been revealed. It has been shown that in superlattices with low coercivity the (111) texture is present, whereas superlattices without texture demonstrate a large coercivity and high GMR ratio.

Publisher

Trans Tech Publications, Ltd.

Subject

Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics

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