Room temperature bistability with wide thermal hysteresis in a spin crossover silica nanocomposite

被引：91

作者：

Durand, Pierrick ^{[1
,2
]}

Pillet, Sebastien ^{[1
,2
]}

Bendeif, El-Eulmi ^{[1
,2
]}

Carteret, Cedric ^{[3
]}

Bouazaoui, Mohamed ^{[4
]}

El Hamzaoui, Hicham ^{[4
]}

Capoen, Bruno ^{[4
]}

Salmon, Lionel ^{[5
,6
]}

Hebert, Sylvie ^{[7
,8
]}

Ghanbaja, Jaafar ^{[9
]}

Aranda, Lionel ^{[10
]}

Schaniel, Dominik ^{[1
,2
]}

机构：

[1] Univ Lorraine, CRM2, UMR 7036, F-54506 Vandoeuvre Les Nancy, France

[2] CNRS, CRM2, UMR 7036, F-54506 Vandoeuvre Les Nancy, France

[3] Univ Lorraine, CNRS, UMR 7564, LCPME, F-545601 Vandoeuvre Les Nancy, France

[4] Univ Lille 1 Sci & Technol, IRCICA, Lab Phys Lasers Atomes & Mol, CNRS,UMR 8523,USR 3380, F-59655 Villeneuve Dascq, France

[5] CNRS, Lab Chim Coordinat, F-31077 Toulouse, France

[6] Univ Toulouse, UPS, INP, F-31077 Toulouse, France

[7] CNRS, UMR6508, Lab CRISMAT, F-14050 Caen, France

[8] ENSICAEN, F-14050 Caen, France

[9] Univ Lorraine, Inst Jean Lamour, CC MEM, F-54011 Nancy, France

[10] Fac Sci, UMR 7198, Inst Jean Lamour, F-54506 Vandoeuvre Les Nancy, France

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2013年 / 1卷 / 10期

关键词：

POLYMERIC IRON(II) COMPOUNDS; MAGNETIC-PROPERTIES; MESOPOROUS SILICA; TRANSITION REGIME; THIN-FILMS; NANOPARTICLES; ADSORPTION; BEHAVIOR; NANO; SIZE;

D O I：

10.1039/c3tc00546a

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanocomposites have been processed following a wet-impregnation approach, by confined growth of nanoparticles of the spin crossover complex [Fe(Htrz)(2)(trz)](BF4) within pre-formed transparent mesoporous silica monoliths of well controlled porosity. The obtained materials were studied using numerous characterisation techniques to define the interplay between the porosity of the host matrix, the structure and morphology of the in situ elaborated nanoparticles, and the spin crossover properties of the composite. Transmission electron micrographs show monodisperse spherical nanoparticles of mean diameter 3.2(5) nm, homogeneously distributed within the pores of the silica monolith. Magnetic measurements, temperature dependent infrared, Raman, and Mossbauer spectroscopy confirm the spin transition behaviour of the nanocomposite, with a room temperature bistability and 65 K wide hysteresis.

引用

页码：1933 / 1942

页数：10

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