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

Kazin PE, Zykin MA, Schnelle W, Zubavichus YV, Babeshkin KA, Tafeenko VA, Felser C, Jansen M (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Inorganic Chemistry American Chemical Society

Book Volume: 56

Pages Range: 1232-1240

Journal Issue: 3

DOI: 10.1021/acs.inorgchem.6b02348

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

Involved external institutions

Lomonosov Moscow State University / Московский государственный университет имени М.В.Ломоносова RU Russian Federation (RU) Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE) National Research Centre (NRC) / المركز القومي للبحوث EG Egypt (EG)

How to cite

APA:

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

MLA:

Kazin, Pavel E., et al. "Cobalt-Based Single-Ion Magnets on an Apatite Lattice: Toward Patterned Arrays for Magnetic Memories." Inorganic Chemistry 56.3 (2017): 1232-1240.

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