Coexisting Ferromagnetic and Ferroelectric Order in a CuCl4-based Organic-Inorganic Hybrid

Alexey O. Polyakov, Anne H. Arkenbout, Jacob Baas, Graeme R. Blake, Auke Meetsma, Antonio Caretta, Paul H. M. van Loosdrecht, Thomas T. M. Palstra*

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

137 Citaten (Scopus)
725 Downloads (Pure)

Samenvatting

We investigate the structural, magnetic, and dielectric properties of the organic-inorganic hybrid material CuCl4(C6H5CH2CH2NH3)(2) and demonstrate that spontaneous ferroelectric order sets in below 340 K, which coexists with ferromagnetic ordering below 13 K. We use X-ray diffraction to show that the electric polarization results from the spatial ordering of hydrogen bonds that link the organic block comprised of phenylethylammonium cations to the inorganic copper chloride block. The hydrogen bond ordering is driven by buckling of the corner-linked copper chloride octahedra. Because the magnetic exchange pathways are also determined by this octahedral buckling, a potentially large coupling is induced. Our results imply that such hybrids form a new family of multiferroic materials. KEYWORDS: multiferroic, ferroelectric, ferromagnetic, organic inorganic hybrid, metal-oxide framework

Originele taal-2English
Pagina's (van-tot)133-139
Aantal pagina's7
TijdschriftChemistry of Materials
Volume24
Nummer van het tijdschrift1
DOI's
StatusPublished - 10-jan-2012

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