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  Cobalt-Based Single-Ion Magnets on an Apatite Lattice: Toward Patterned Arrays for Magnetic Memories

Kazin, P. E., Zykin, M. A., Schnelle, W., Zubavichus, Y. V., Babeshkin, K. A., Tafeenko, V. A., et al. (2017). Cobalt-Based Single-Ion Magnets on an Apatite Lattice: Toward Patterned Arrays for Magnetic Memories. Inorganic Chemistry, 56(3), 1232-1240. doi:10.1021/acs.inorgchem.6b02348.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-63E1-5 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-C351-1
Genre: Journal Article

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 Creators:
Kazin, Pavel E.1, Author
Zykin, Mikhail A.1, Author
Schnelle, Walter2, Author              
Zubavichus, Yan V.1, Author
Babeshkin, Konstantin A.1, Author
Tafeenko, Victor A.1, Author
Felser, Claudia3, Author              
Jansen, Martin4, Author              
Affiliations:
1External Organizations, ou_persistent22              
2Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              
4Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              

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 Abstract: Single-ion magnets (SIMs) that can maintain magnetization direction on an individual transition metal atom represent the smallest atomic-scale units for future magnetic data storage devices and molecular electronics. Here we present a robust extended inorganic solid hosting efficient SIM centers, as an alternative to molecular SIM crystals. We show that unique dioxocobaltate(II) ions, confined in the channels of strontium hydroxyapatite, exhibit classical SIM features with a large energy barrier for magnetization reversal (Ueff) of 51–59 cm–1. The samples have been tuned such that a magnetization hysteresis opens below 8 K and Ueff increases by a factor of 4 and can be further enhanced to the highest values among 3d metal complexes of 275 cm–1 when Ba is substituted for Sr. The SIM properties are preserved without any tendency toward spin ordering up to a high Co concentration. At a maximal Co content, a hypothetical regular hexagonal grid of SIMs with a 1 nm interspacing on the (001) crystal facet would allow a maximal magnetic recording density of 105 Gb/cm2.

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Language(s): eng - English
 Dates: 2017-01-102017-01-10
 Publication Status: Published in print
 Pages: -
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 Rev. Type: -
 Identifiers: DOI: 10.1021/acs.inorgchem.6b02348
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Title: Inorganic Chemistry
  Abbreviation : Inorg. Chem.
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 56 (3) Sequence Number: - Start / End Page: 1232 - 1240 Identifier: ISSN: 0020-1669
CoNE: https://pure.mpg.de/cone/journals/resource/0020-1669