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

被引：191

作者：

Polyakov, Alexey O. ^{[1
]}

Arkenbout, Anne H. ^{[1
]}

Baas, Jacob ^{[1
]}

Blake, Graeme R. ^{[1
]}

Meetsma, Auke ^{[1
]}

Caretta, Antonio ^{[1
]}

van Loosdrecht, Paul H. M. ^{[1
]}

Palstra, Thomas T. M. ^{[1
]}

机构：

[1] Univ Groningen, Zernike Inst Adv Mat, NL-9747 AG Groningen, Netherlands

来源：

CHEMISTRY OF MATERIALS | 2012年 / 24卷 / 01期

关键词：

multiferroic; ferroelectric; ferromagnetic; organic-inorganic hybrid; metal-oxide framework; MAGNETIC-PROPERTIES; CRYSTAL-STRUCTURES; PHASE; PEROVSKITES; MULTIFERROICS;

D O I：

10.1021/cm2023696

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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

引用

页码：133 / 139

页数：7

共 37 条

[1]

[Anonymous], SAINT PLUS VERS 6 45

[2]

ARKENBOUT AH, 2010, THESIS ZERNIKE I

[3] Charge-transfer induced surface conductivity for a copper based inorganic-organic hybrid [J].

Arkenbout, Anne H. ;

Uemura, Takafumi ;

Takeya, Jun ;

Palstra, Thomas T. M. .

APPLIED PHYSICS LETTERS, 2009, 95 (17)

[4]

BEURSKENS PT, 2008, DIRDIF 08 PROGRAM SY

[5] X-RAY RIETVELD STRUCTURE DETERMINATION OF AMMONIUM ROCHELLE SALT AT 120-K (PARAELECTRIC PHASE) AND 100-K (FERROELECTRIC PHASE) [J].

BROZEK, Z ;

MUCHA, D ;

STADNICKA, K .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1994, 50 :465-472

[6]

*BRUK AXS INC, SMART VERS 5 632

[7]

CARETTA A, UNPUB

[8] Multiferroics: a magnetic twist for ferroelectricity [J].

Cheong, Sang-Wook ;

Mostovoy, Maxim .

NATURE MATERIALS, 2007, 6 (01) :13-20

[9] ORIGIN OF FERROELECTRICITY IN PEROVSKITE OXIDES [J].

COHEN, RE .

NATURE, 1992, 358 (6382) :136-138

[10] MAGNETIC MEASUREMENTS ON (C2H5NH3)2 CUCL4 - FERROMAGNETIC LAYERS COUPLED BY A VERY WEAK ANTIFERROMAGNETIC INTERACTION [J].

DEJONGH, LJ ;

VANAMSTE.WD ;

MIEDEMA, AR .

PHYSICA, 1972, 58 (02) :277-&

← 1 2 3 4 →