Cobalt single-molecule magnet

En‐Che Yang(University of California San Diego), David N. Hendrickson(University of California San Diego), Wolfgang Wernsdorfer(Centre National de la Recherche Scientifique), Motohiro Nakano(The University of Osaka), Lev N. Zakharov(University of Delaware), Roger D. Sommer(University of Delaware), Arnold L. Rheingold(University of Delaware), M. Ledezma-Gairaud(University of Florida), George Christou(University of Florida)
Journal of Applied Physics
May 15, 2002
10.1063/1.1450813
Cited by 278Open Access
Full Text

Abstract

A cobalt molecule that functions as a single-molecule magnet, [Co4(hmp)4(MeOH)4Cl4], where hmp− is the anion of hydroxymethylpyridine, is reported. The core of the molecule consists of four Co(II) cations and four hmp− oxygen atom ions at the corners of a cube. Variable-field and variable-temperature magnetization data have been analyzed to establish that the molecule has a S=6 ground state with considerable negative magnetoanisotropy. Single-ion zero-field interactions (DSz2) at each cobalt ion are the origin of the negative magnetoanisotropy. A single crystal of the compound was studied by means of a micro-superconducting quantum interference device magnetometer in the range of 0.040–1.0 K. Hysteresis was found in the magnetization versus magnetic field response of this single crystal.

Related Papers

No related papers found

Powered by citation graph analysis