Tunable and switchable dielectric constant in an amphidynamic crystal

Wen Zhang; Heng Yun Ye; Robert Graf; Hans W. Spiess; Ye Feng Yao; Run Qiang Zhu; Ren Gen Xiong

doi:10.1021/ja3110335

Tunable and switchable dielectric constant in an amphidynamic crystal

Wen Zhang^*
, Heng Yun Ye
, Robert Graf
, Hans W. Spiess
, Ye Feng Yao
, Run Qiang Zhu
, Ren Gen Xiong

^*Corresponding author for this work

School of Physics and Electronic Science

Research output: Contribution to journal › Article › peer-review

327 Scopus citations

Abstract

The inclusion compound [(CH₃)₂NH₂] ₂[KCo(CN)₆] exhibits a marked temperature-dependent dielectric constant and can be considered as a model of tunable and switchable dielectric materials. Crystal structure and solid-state NMR studies reveal a switchable property between low and high dielectric states around 245 K. This originates from an order-disorder phase transition of the system, changing the dynamics of the polar dimethylammonium (DMA) cation. Furthermore, the tuning of the dielectric constant at temperatures below the phase transition point is related to increasing angular pretransitional fluctuations of the dipole moment of DMA.

Original language	English
Pages (from-to)	5230-5233
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	135
Issue number	14
DOIs	https://doi.org/10.1021/ja3110335
State	Published - 10 Apr 2013

Access to Document

10.1021/ja3110335

Cite this

@article{40b2ae542f1e490f902fe8660920a8f4,

title = "Tunable and switchable dielectric constant in an amphidynamic crystal",

abstract = "The inclusion compound [(CH3)2NH2] 2[KCo(CN)6] exhibits a marked temperature-dependent dielectric constant and can be considered as a model of tunable and switchable dielectric materials. Crystal structure and solid-state NMR studies reveal a switchable property between low and high dielectric states around 245 K. This originates from an order-disorder phase transition of the system, changing the dynamics of the polar dimethylammonium (DMA) cation. Furthermore, the tuning of the dielectric constant at temperatures below the phase transition point is related to increasing angular pretransitional fluctuations of the dipole moment of DMA.",

author = "Wen Zhang and Ye, \{Heng Yun\} and Robert Graf and Spiess, \{Hans W.\} and Yao, \{Ye Feng\} and Zhu, \{Run Qiang\} and Xiong, \{Ren Gen\}",

year = "2013",

month = apr,

day = "10",

doi = "10.1021/ja3110335",

language = "英语",

volume = "135",

pages = "5230--5233",

journal = "Journal of the American Chemical Society",

issn = "0002-7863",

publisher = "American Chemical Society",

number = "14",

}

TY - JOUR

T1 - Tunable and switchable dielectric constant in an amphidynamic crystal

AU - Zhang, Wen

AU - Ye, Heng Yun

AU - Graf, Robert

AU - Spiess, Hans W.

AU - Yao, Ye Feng

AU - Zhu, Run Qiang

AU - Xiong, Ren Gen

PY - 2013/4/10

Y1 - 2013/4/10

N2 - The inclusion compound [(CH3)2NH2] 2[KCo(CN)6] exhibits a marked temperature-dependent dielectric constant and can be considered as a model of tunable and switchable dielectric materials. Crystal structure and solid-state NMR studies reveal a switchable property between low and high dielectric states around 245 K. This originates from an order-disorder phase transition of the system, changing the dynamics of the polar dimethylammonium (DMA) cation. Furthermore, the tuning of the dielectric constant at temperatures below the phase transition point is related to increasing angular pretransitional fluctuations of the dipole moment of DMA.

AB - The inclusion compound [(CH3)2NH2] 2[KCo(CN)6] exhibits a marked temperature-dependent dielectric constant and can be considered as a model of tunable and switchable dielectric materials. Crystal structure and solid-state NMR studies reveal a switchable property between low and high dielectric states around 245 K. This originates from an order-disorder phase transition of the system, changing the dynamics of the polar dimethylammonium (DMA) cation. Furthermore, the tuning of the dielectric constant at temperatures below the phase transition point is related to increasing angular pretransitional fluctuations of the dipole moment of DMA.

UR - https://www.scopus.com/pages/publications/84876062531

U2 - 10.1021/ja3110335

DO - 10.1021/ja3110335

M3 - 文章

AN - SCOPUS:84876062531

SN - 0002-7863

VL - 135

SP - 5230

EP - 5233

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 14

ER -

Tunable and switchable dielectric constant in an amphidynamic crystal

Abstract

Access to Document

Other files and links

Fingerprint

Cite this