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Modern Magnetic Systems Micro, Nano, and Molecular Systems ZWE Materialien Article 2019

Superior Magnetic Performance in FePt L10 Nanomaterials

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Modern Magnetic Systems
Kwanghyo Son
  • Postdoctoral Researcher
Thumb ticker sm jeong hyeon ho2
Micro, Nano, and Molecular Systems
Jeong Hyeon-Ho
  • Postdoctoral Researcher
Thumb ticker sm gunther foto kleiner 04 0321
ZWE Materialien
Gunther Richter
Head of Materials CSF
Thumb ticker sm 20200302 gisela schuetz 02 wolfram scheible
Modern Magnetic Systems
Gisela Schütz
  • Director
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Modern Magnetic Systems
Eberhard Goering
  • Research Group Leader
Fept

The discovery of the high maximum energy product of 59 MGOe for NdFeB magnets is a breakthrough in the development of permanent magnets with a tremendous impact in many fields of technology. This value is still the world record, for 40 years. This work reports on a reliable and robust route to realize nearly perfectly ordered L1_0-phase FePt nanoparticles, leading to an unprecedented energy product of 80 MGOe at room temperature. Furthermore, with a 3 nm Au coverage, the magnetic polarization of these nanomagnets can be enhanced by 25% exceeding 1.8 T. This exceptional magnetization and anisotropy is confirmed by using multiple imaging and spectroscopic methods, which reveal highly consistent results. Due to the unprecedented huge energy product, this material can be envisaged as a new advanced basic magnetic component in modern micro and nanosized devices.

Author(s): Son, K. and Ryu, G. H. and Jeong, H.-H. and Fink, L. and Merz, M. and Nagel, P. and Schuppler, S. and Richter, G. and Goering, E. and Schütz, G.
Journal: Small
Volume: 15
Number (issue): 34
Pages: 1902353
Year: 2019
Month: July
Day: 1
Publisher: Wiley
Bibtex Type: Article (article)
DOI: 10.1002/smll.201902353
URL: https://onlinelibrary.wiley.com/doi/full/10.1002/smll.201902353
Address: Weinheim, Germany
Electronic Archiving: grant_archive
Language: eng

BibTex 

@article{2019Son,
  title = {Superior Magnetic Performance in FePt L10 Nanomaterials},
  journal = {Small},
  abstract = {The discovery of the high maximum energy product of 59 MGOe for NdFeB magnets is a breakthrough in the development of permanent magnets with a tremendous impact in many fields of technology. This value is still the world record, for 40 years. This work reports on a reliable and robust route to realize nearly perfectly ordered L1_0-phase FePt nanoparticles, leading to an unprecedented energy product of 80 MGOe at room temperature. Furthermore, with a 3 nm Au coverage, the magnetic polarization of these nanomagnets can be enhanced by 25% exceeding 1.8 T. This exceptional magnetization and anisotropy is confirmed by using multiple imaging and spectroscopic methods, which reveal highly consistent results. Due to the unprecedented huge energy product, this material can be envisaged as a new advanced basic magnetic component in modern micro and nanosized devices.},
  volume = {15},
  number = {34},
  pages = {1902353},
  publisher = {Wiley},
  address = {Weinheim, Germany},
  month = jul,
  year = {2019},
  slug = {2019son},
  author = {Son, K. and Ryu, G. H. and Jeong, H.-H. and Fink, L. and Merz, M. and Nagel, P. and Schuppler, S. and Richter, G. and Goering, E. and Sch{\"u}tz, G.},
  url = {https://onlinelibrary.wiley.com/doi/full/10.1002/smll.201902353},
  month_numeric = {7}
}