[Fe(Htrz)(trz)](BF)自旋交叉配合物中的压阻效应

Piezoresistive Effect in the [Fe(Htrz)(trz)](BF) Spin Crossover Complex.

作者信息

Diaconu Andrei, Lupu Simona-Lacramioara, Rusu Ionela, Risca Ioan-Marian, Salmon Lionel, Molnár Gábor, Bousseksou Azzedine, Demont Philippe, Rotaru Aurelian

机构信息

Faculty of Electrical Engineering and Computer Science & Research Center MANSiD, Stefan cel Mare University , Suceava 720229, Romania.

Faculty of Forestry & Research Center MANSiD, Stefan cel Mare University , Suceava 720229, Romania.

出版信息

J Phys Chem Lett. 2017 Jul 6;8(13):3147-3151. doi: 10.1021/acs.jpclett.7b01111. Epub 2017 Jun 26.

DOI:10.1021/acs.jpclett.7b01111

PMID:28635283

Abstract

We report on the effect of hydrostatic pressure on the electrical conductivity and dielectric permittivity of the Fe(Htrz)(trz) (Htrz = 1H-1,2,4,-triazole) spin crossover complex. Variable-temperature and -pressure broad-band impedance spectrometry revealed a piezoresistive effect of more than 1 order of magnitude for pressures as low as 500 bar, associated with a large pressure-induced hysteresis of 1700 bar. The origin of the piezoresistive effect has been attributed to the pressure-induced spin state switching in the complex, and the associated P,T phase diagram was determined.

摘要

我们报道了静水压力对Fe(Htrz)(trz)（Htrz = 1H-1,2,4-三唑）自旋交叉配合物的电导率和介电常数的影响。变温和变压宽带阻抗谱显示，在低至500巴的压力下，压阻效应超过1个数量级，同时伴随着1700巴的大压力诱导滞后现象。压阻效应的起源归因于配合物中压力诱导的自旋态转变，并确定了相关的P-T相图。