Self-assembled single-crystal ferromagnetic iron nanowires formed by decomposition

L. Mohaddes-Ardabili; H. Zheng; S. B. Ogale; B. Hannoyer; W. Tian; J. Wang; S. E. Lofland; S. R. Shinde; T. Zhao; Y. Jia; L. Salamanca-Riba; D. G. Schlom; M. Wuttig; R. Ramesh

doi:10.1038/nmat1162

Self-assembled single-crystal ferromagnetic iron nanowires formed by decomposition

L. Mohaddes-Ardabili, H. Zheng, S. B. Ogale, B. Hannoyer, W. Tian, J. Wang, S. E. Lofland, S. R. Shinde, T. Zhao, Y. Jia, L. Salamanca-Riba, D. G. Schlom, M. Wuttig, R. Ramesh

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

159 Citations (Scopus)

Abstract

Arrays of perpendicular ferromagnetic nanowires have recently attracted considerable interest for their potential use in many areas of advanced nanotechnology. We report a simple approach to create self-assembled nanowires of α-Fe through the decomposition of a suitably chosen perovskite. We illustrate the principle behind this approach using the reaction 2La _0.5Sr_0.5FeO₃ → LaSrFeO₄ + Fe + O₂ that occurs during the deposition of La_0.5Sr _0.5FeO₃ under reducing conditions. This leads to the spontaneous formation of an array of single-crystalline α-Fe nanowires embedded in LaSrFeO₄ matrix, which grow perpendicular to the substrate and span the entire film thickness. The diameter and spacing of the nanowires are controlled directly by deposition temperature. The nanowires show uniaxial anisotropy normal to the film plane and magnetization close to that of bulk α-Fe. The high magnetization and sizable coercivity of the nanowires make them desirable for high-density data storage and other magnetic-device applications.

Original language	English
Pages (from-to)	533-538
Journal	Nature Materials
Volume	3
Issue number	8
DOIs	https://doi.org/10.1038/nmat1162
Publication status	Published - Aug 2004
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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title = "Self-assembled single-crystal ferromagnetic iron nanowires formed by decomposition",

abstract = "Arrays of perpendicular ferromagnetic nanowires have recently attracted considerable interest for their potential use in many areas of advanced nanotechnology. We report a simple approach to create self-assembled nanowires of α-Fe through the decomposition of a suitably chosen perovskite. We illustrate the principle behind this approach using the reaction 2La 0.5Sr0.5FeO3 → LaSrFeO4 + Fe + O2 that occurs during the deposition of La0.5Sr 0.5FeO3 under reducing conditions. This leads to the spontaneous formation of an array of single-crystalline α-Fe nanowires embedded in LaSrFeO4 matrix, which grow perpendicular to the substrate and span the entire film thickness. The diameter and spacing of the nanowires are controlled directly by deposition temperature. The nanowires show uniaxial anisotropy normal to the film plane and magnetization close to that of bulk α-Fe. The high magnetization and sizable coercivity of the nanowires make them desirable for high-density data storage and other magnetic-device applications.",

author = "L. Mohaddes-Ardabili and H. Zheng and Ogale, {S. B.} and B. Hannoyer and W. Tian and J. Wang and Lofland, {S. E.} and Shinde, {S. R.} and T. Zhao and Y. Jia and L. Salamanca-Riba and Schlom, {D. G.} and M. Wuttig and R. Ramesh",

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T1 - Self-assembled single-crystal ferromagnetic iron nanowires formed by decomposition

AU - Mohaddes-Ardabili, L.

AU - Zheng, H.

AU - Ogale, S. B.

AU - Hannoyer, B.

AU - Tian, W.

AU - Wang, J.

AU - Lofland, S. E.

AU - Shinde, S. R.

AU - Zhao, T.

AU - Jia, Y.

AU - Salamanca-Riba, L.

AU - Schlom, D. G.

AU - Wuttig, M.

AU - Ramesh, R.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2004/8

Y1 - 2004/8

N2 - Arrays of perpendicular ferromagnetic nanowires have recently attracted considerable interest for their potential use in many areas of advanced nanotechnology. We report a simple approach to create self-assembled nanowires of α-Fe through the decomposition of a suitably chosen perovskite. We illustrate the principle behind this approach using the reaction 2La 0.5Sr0.5FeO3 → LaSrFeO4 + Fe + O2 that occurs during the deposition of La0.5Sr 0.5FeO3 under reducing conditions. This leads to the spontaneous formation of an array of single-crystalline α-Fe nanowires embedded in LaSrFeO4 matrix, which grow perpendicular to the substrate and span the entire film thickness. The diameter and spacing of the nanowires are controlled directly by deposition temperature. The nanowires show uniaxial anisotropy normal to the film plane and magnetization close to that of bulk α-Fe. The high magnetization and sizable coercivity of the nanowires make them desirable for high-density data storage and other magnetic-device applications.

AB - Arrays of perpendicular ferromagnetic nanowires have recently attracted considerable interest for their potential use in many areas of advanced nanotechnology. We report a simple approach to create self-assembled nanowires of α-Fe through the decomposition of a suitably chosen perovskite. We illustrate the principle behind this approach using the reaction 2La 0.5Sr0.5FeO3 → LaSrFeO4 + Fe + O2 that occurs during the deposition of La0.5Sr 0.5FeO3 under reducing conditions. This leads to the spontaneous formation of an array of single-crystalline α-Fe nanowires embedded in LaSrFeO4 matrix, which grow perpendicular to the substrate and span the entire film thickness. The diameter and spacing of the nanowires are controlled directly by deposition temperature. The nanowires show uniaxial anisotropy normal to the film plane and magnetization close to that of bulk α-Fe. The high magnetization and sizable coercivity of the nanowires make them desirable for high-density data storage and other magnetic-device applications.

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Self-assembled single-crystal ferromagnetic iron nanowires formed by decomposition

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