Tuneable energy barriers in tetrairon(III) single-molecule magnets

Cornia, A.; Fabretti, A. C.; Garrisi, P.; Mortalo, C.; Bonacchi, D.; Sessoli, Roberta; Sorace, Lorenzo; Barra, A. L.; Wernsdorfer, W.

doi:10.1016/j.jmmm.2003.12.1150

The tetrairon(III) clusters Fe-4(L)(2) (dpm)(6) where Hdpm = dipivaloylmethane and H3L MeC(CH2OH)(3) or PhC(CH2OH)(3) have been obtained by site-specific replacement of the six methoxide bridges in Fe-4(OMe)(6)(dpm)(6). As compared with the parent compound, the new clusters show a much larger anisotropy in the S = 5 ground spin state (D/k(B) similar to -0.6 K vs. -0.3 K) and a higher energy barrier to the reversal of the magnetization.

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Titolo:	Tuneable energy barriers in tetrairon(III) single-molecule magnets
Autori di Ateneo:	A. Cornia A. C. Fabretti P. Garrisi C. Mortalo D. Bonacchi SESSOLI, ROBERTA SORACE, LORENZO A. L. Barra W. Wernsdorfer mostra contributor esterni nascondi contributor esterni
Autori:	A. Cornia; A. C. Fabretti; P. Garrisi; C. Mortalo; D. Bonacchi; SESSOLI, ROBERTA; SORACE, LORENZO; A. L. Barra; W. Wernsdorfer
Anno di registrazione:	2004
Rivista:	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume:	272
Pagina iniziale:	E749
Pagina finale:	E751
Abstract:	The tetrairon(III) clusters Fe-4(L)(2) (dpm)(6) where Hdpm = dipivaloylmethane and H3L MeC(CH2OH)(3) or PhC(CH2OH)(3) have been obtained by site-specific replacement of the six methoxide bridges in Fe-4(OMe)(6)(dpm)(6). As compared with the parent compound, the new clusters show a much larger anisotropy in the S = 5 ground spin state (D/k(B) similar to -0.6 K vs. -0.3 K) and a higher energy barrier to the reversal of the magnetization.
Handle:	http://hdl.handle.net/2158/344897
Appare nelle tipologie:	1a - Articolo su rivista

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