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  Intrinsic Magnetic Properties of a Highly Anisotropic Rare-Earth-Free Fe2P-Based Magnet

He, Y., Adler, P., Schneider, S., Soldatov, I., Mu, Q., Borrmann, H., et al. (2021). Intrinsic Magnetic Properties of a Highly Anisotropic Rare-Earth-Free Fe2P-Based Magnet. Advanced Functional Materials, 2107513, pp. 1-8. doi:10.1002/adfm.202107513.

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 Creators:
He, Yangkun1, Author              
Adler, Peter2, Author              
Schneider, Sebastian3, Author
Soldatov, Ivan3, Author
Mu, Qingge1, Author              
Borrmann, Horst4, Author              
Schnelle, Walter5, Author              
Schaefer, Rudolf3, Author
Rellinghaus, Bernd3, Author
Fecher, Gerhard H.6, Author              
Felser, Claudia7, Author              
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2Peter Adler, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863435              
3External Organizations, ou_persistent22              
4Horst Borrmann, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863410              
5Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              
6Gerhard Fecher, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863431              
7Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: Permanent magnets are applied in many large-scale and emerging applications and are crucial components in numerous established and newly evolving technologies. Rare-earth magnets exhibit excellent hard magnetic properties; however, their applications are limited by the price and supply risk of the strategic rare-earth elements. Therefore, there is an increasing demand for inexpensive magnets without strategic elements. Here, the authors report the intrinsic highly-anisotropic magnetic properties of Co and Si co-doped single crystals (Fe1-yCoy)(2)P1-xSix (y approximate to 0.09). Co increases Curie temperature T-C; Si doping decreases magnetocrystalline anisotropy K-1 and also increases T-C significantly because of the enhanced interlayer interaction. The maximum room temperature magnetocrystalline anisotropy K-1 = 1.09 MJ m(-3) is achieved for x = 0.22, with saturation magnetization mu M-0(s) = 0.96 T and T-C = 506 K. The theoretical maximum energy product is one of the largest for any magnet without a rare earth or Pt. Besides its promising intrinsic magnetic properties and absence of any strategic elements, other advantages are phase stability at high temperatures and excellent corrosion resistance, which make this material most promising for permanent magnetic development that will have a positive influence in industry and daily life.

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Language(s): eng - English
 Dates: 2021-10-152021-10-15
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000707331200001
DOI: 10.1002/adfm.202107513
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Title: Advanced Functional Materials
  Abbreviation : Adv. Funct. Mater.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH Verlag GmbH
Pages: - Volume / Issue: - Sequence Number: 2107513 Start / End Page: 1 - 8 Identifier: ISSN: 1616-301X
CoNE: https://pure.mpg.de/cone/journals/resource/954925596563