Heavy metal deposition temperature tuned spin pumping efficiency control in permalloy/tantalum bilayers

Priyanka P.; Makani N. H.; Banerjee R.Sarkar I

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Heavy metal deposition temperature tuned spin pumping efficiency control in permalloy/tantalum bilayers

机译：Heavy metal deposition temperature tuned spin pumping efficiency control in permalloy/tantalum bilayers

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Spin pumping is a key property for spintronic application that can be realized in heavy metal/ferromagnet bilayers. Here we demonstrate the possibility of improving spin pumping in permalloy (Py)/tantalum (Ta) bilayers through control of Ta heavy metal deposition temperature. Through a combination of structural and ferromagnetic resonance based magnetization dynamics study, we reveal the role of Ta deposition temperature in improving spin mixing conductance which is a key parameter for spin pumping across the Py/Ta interface. The results show that by depositing Ta above room temperature, a high spin mixing conductance of 7.7 x10(18) m(-2) is obtained with alpha-Ta layer. The results present an understanding of the correlation between heavy metal deposition temperature and interface structure improvement and consequent control of spin pumping in Py/Ta bilayers.

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来源
《Nanotechnology》 |2023年第10期|共7页
作者
Priyanka P.; Makani N. H.; Banerjee R.Sarkar I;
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作者单位

Inst Nano Sci & Technol;

Indian Inst Technol Gandhinagar;

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原文格式 PDF
正文语种英语
中图分类特种结构材料;
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spin pumping; heterostructures; spintronics; spin mixing conductance; magnetic damping;

Heavy metal deposition temperature tuned spin pumping efficiency control in permalloy/tantalum bilayers

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