Significant modification of 59Co hyperfine fields assigned to specific structural changes in sputtered Co/Au and Co/Cu multilayers

被引：8

作者：

Christides, C ^{[1
]}

Stavroyiannis, S

Niarchos, D

Wojcik, M

Nadolski, S

Jedryka, E

机构：

[1] Univ Patras, Sch Engn, Dept Engn Sci, GR-26110 Patras, Greece

[2] NCSR Demokritos, Inst Sci Mat, Athens 15310, Greece

[3] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

来源：

PHYSICAL REVIEW B | 1999年 / 59卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.59.8812

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetron sputtered Co/Cu and Co/Au multilayers (MLs) with low-field giant magnetoresistance were grown on SINx underlayers. Spin-echo Co-59 nuclear magnetic resonance (NMR) spectra reveal an fee Co layer stacking for the Co/Cu multilayers whereas the Co/Au spectra exhibit a unique profile that cannot be assigned to any of the known bulk crystalline or glassy Co structures. Analysis of the Co/Au superlattice reflections, observed with x-ray diffraction (XRD), indicates that Co layers (d(Co)) expand significantly relative to close-packed lattice values and provide evidence for a reduced atomic density. The complementary study with XRD and NMR measurements has revealed a metastable Co nanostructure in the as-prepared Co/Au MLs, [S0163-1829(99)00913-3].

引用

页码：8812 / 8820

页数：9

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