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Phonon and Spin Wave Spectra Study on“in situ Oxidizing Sputtered”Ni/NiO Multilayers
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作者 wang wen-nai JIANG Zheng-sheng +1 位作者 CHENG Guang-xu DU You-wei 《Chinese Physics Letters》 SCIE CAS CSCD 1996年第1期73-76,共4页
An improved sputtering method,which is named "in situ oxidizing sputtering",was used to prepare periodic Ni/NiO multilayers.Samples studied in this letter contains 20 pairs of Ni/NiO with period about 100 A.... An improved sputtering method,which is named "in situ oxidizing sputtering",was used to prepare periodic Ni/NiO multilayers.Samples studied in this letter contains 20 pairs of Ni/NiO with period about 100 A.In Raman scattering,the low frequency phonon modes are hiterpreted as LA phonon folding effect,which is usually measured in superlattices with a strict periodic structure.The ferromagnetic resonance spectra were also recorded at room temperature with microwave frequency 9.777 GHz.The analysis of spin wave resonance indicates that Ni sublayers are coupled with each other,which is the mechanism that surely relates to the amorphous-like NiO spacers. 展开更多
关键词 structure. PHONON AMORPHOUS
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