Magnetodielectric coupling of a polar organic-inorganic hybrid Cr(II) phosphonate

被引：26

作者：

Nenert, G. ^{[1
]}

Adem, U. ^{[1
]}

Bauer, E. M. ^{[2
]}

Bellitto, C. ^{[2
]}

Righini, G. ^{[2
]}

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

机构：

[1] Univ Groningen, Zernike Inst Adv Mat, Solid State Chem Lab, NL-9747 AG Groningen, Netherlands

[2] CNR, Ist Struttura Mat, Sez Montelibretti, I-00016 Monterotondo, RM, Italy

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.78.054443

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cr[(H3N-(CH2)(2)-PO3)(Cl)(H2O)] represents a rare example of a polar organic-inorganic hybrid material that exhibits a canted antiferromagnetic order below T-N=5.5 K. The unusual coexistence of a polar crystal structure and magnetic order triggered our investigation of the magnetodielectric coupling. The coupling is evidenced by an anomaly in the temperature dependence of the dielectric constant epsilon below the Neel temperature. The magnetocapacitance is enhanced by one order of magnitude below T-N. The main characteristics of the magnetodielectic response are interpreted by Landau theoretical coupling terms.

引用

页数：5

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