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Study of Interdiffusion and Magnetization of Cu-Doped Fe/Ni Multilayers.

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Title: Study of Interdiffusion and Magnetization of Cu-Doped Fe/Ni Multilayers.
Authors: Gupta, Ashish1 (AUTHOR), Kalal, Shailesh1 (AUTHOR), A, Akshaya1 (AUTHOR), Stahn, Jochen2 (AUTHOR), Gupta, Mukul1 (AUTHOR) mgupta@csr.res.in
Source: Journal of Superconductivity & Novel Magnetism. Oct2024, Vol. 37 Issue 8-10, p1661-1667. 7p.
Subjects: Magnetic anisotropy, Neutron reflectivity, Magnetic moments, Iron meteorites, Permanent magnets
Abstract: L10-ordered FeNi (tetrataenite) exhibits a large saturation magnetization and a robust uniaxial magnetic anisotropy, making it a valuable rare-earth free candidate for permanent magnet applications. It has been predominantly identified in iron meteorite rocks, and its laboratory synthesis has been hindered due to sluggish diffusion occurring below the order-disorder temperature of about 600 K. Doping of Cu is anticipated to facilitate interdiffusion and therefore enabling the laboratory synthesis of the L10-ordered FeNi phase. This study investigates interdiffusion and magnetization in undoped and Cu-doped Fe/Ni thin film multilayers through a complementary usage of polarized neutron reflectivity (PNR) and SQUID-VSM (S-VSM). The PNR measurements were performed on the as-deposited (at 423 K) and isochronally annealed samples at 473, 503, 533, and 573 K. It was found that the magnetic moment of Fe/Ni multilayers was not significantly affected by Cu doping but a substantial increase in interdiffusion is clearly evident. The enhancement of coercivity and anisotropy field was further examined using S-VSM. These findings are expected to lead to a new pathway toward the laboratory synthesis of the L10 phase. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Superconductivity & Novel Magnetism is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Study of Interdiffusion and Magnetization of Cu-Doped Fe/Ni Multilayers.
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  Data: <searchLink fieldCode="AR" term="%22Gupta%2C+Ashish%22">Gupta, Ashish</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kalal%2C+Shailesh%22">Kalal, Shailesh</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22A%2C+Akshaya%22">A, Akshaya</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Stahn%2C+Jochen%22">Stahn, Jochen</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gupta%2C+Mukul%22">Gupta, Mukul</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> mgupta@csr.res.in</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Superconductivity+%26+Novel+Magnetism%22">Journal of Superconductivity & Novel Magnetism</searchLink>. Oct2024, Vol. 37 Issue 8-10, p1661-1667. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Magnetic+anisotropy%22">Magnetic anisotropy</searchLink><br /><searchLink fieldCode="DE" term="%22Neutron+reflectivity%22">Neutron reflectivity</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+moments%22">Magnetic moments</searchLink><br /><searchLink fieldCode="DE" term="%22Iron+meteorites%22">Iron meteorites</searchLink><br /><searchLink fieldCode="DE" term="%22Permanent+magnets%22">Permanent magnets</searchLink>
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  Data: L10-ordered FeNi (tetrataenite) exhibits a large saturation magnetization and a robust uniaxial magnetic anisotropy, making it a valuable rare-earth free candidate for permanent magnet applications. It has been predominantly identified in iron meteorite rocks, and its laboratory synthesis has been hindered due to sluggish diffusion occurring below the order-disorder temperature of about 600 K. Doping of Cu is anticipated to facilitate interdiffusion and therefore enabling the laboratory synthesis of the L10-ordered FeNi phase. This study investigates interdiffusion and magnetization in undoped and Cu-doped Fe/Ni thin film multilayers through a complementary usage of polarized neutron reflectivity (PNR) and SQUID-VSM (S-VSM). The PNR measurements were performed on the as-deposited (at 423 K) and isochronally annealed samples at 473, 503, 533, and 573 K. It was found that the magnetic moment of Fe/Ni multilayers was not significantly affected by Cu doping but a substantial increase in interdiffusion is clearly evident. The enhancement of coercivity and anisotropy field was further examined using S-VSM. These findings are expected to lead to a new pathway toward the laboratory synthesis of the L10 phase. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Superconductivity & Novel Magnetism is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10948-024-06804-8
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        Text: English
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      – SubjectFull: Magnetic anisotropy
        Type: general
      – SubjectFull: Neutron reflectivity
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      – SubjectFull: Magnetic moments
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      – SubjectFull: Iron meteorites
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      – SubjectFull: Permanent magnets
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            – D: 01
              M: 10
              Text: Oct2024
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              Y: 2024
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