Anomalous Pressure Effects on the Electrical Conductivity of the Spin Crossover Complex [Fe(pyrazine){Au(CN)2}2]

Andrei-Cristian Gheorghe; Yurii S. Bibik; Olesia I. Kucheriv; Diana D. Barakhtii; Marin-Vlad Boicu; Ionela Rusu; Andrei Diaconu; Il’ya A. Gural’skiy; Gábor Molnár; Aurelian Rotaru

doi:10.3390/magnetochemistry6030031

Magnetochemistry (Jul 2020)

Anomalous Pressure Effects on the Electrical Conductivity of the Spin Crossover Complex [Fe(pyrazine){Au(CN)2}2]

Andrei-Cristian Gheorghe,
Yurii S. Bibik,
Olesia I. Kucheriv,
Diana D. Barakhtii,
Marin-Vlad Boicu,
Ionela Rusu,
Andrei Diaconu,
Il’ya A. Gural’skiy,
Gábor Molnár,
Aurelian Rotaru

Affiliations

Andrei-Cristian Gheorghe: Faculty of Electrical Engineering and Computer Science & MANSiD Research Center, Stefan cel Mare University, 13, Str. Universitatii, 720229 Suceava, Romania
Yurii S. Bibik: Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska St., 01601 Kyiv, Ukraine
Olesia I. Kucheriv: Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska St., 01601 Kyiv, Ukraine
Diana D. Barakhtii: Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska St., 01601 Kyiv, Ukraine
Marin-Vlad Boicu: Faculty of Electrical Engineering and Computer Science & MANSiD Research Center, Stefan cel Mare University, 13, Str. Universitatii, 720229 Suceava, Romania
Ionela Rusu: Faculty of Electrical Engineering and Computer Science & MANSiD Research Center, Stefan cel Mare University, 13, Str. Universitatii, 720229 Suceava, Romania
Andrei Diaconu: Faculty of Electrical Engineering and Computer Science & MANSiD Research Center, Stefan cel Mare University, 13, Str. Universitatii, 720229 Suceava, Romania
Il’ya A. Gural’skiy: Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska St., 01601 Kyiv, Ukraine
Gábor Molnár: LCC, CNRS and Université de Toulouse, UPS, INP, F-31077 Toulouse, France
Aurelian Rotaru: Faculty of Electrical Engineering and Computer Science & MANSiD Research Center, Stefan cel Mare University, 13, Str. Universitatii, 720229 Suceava, Romania

DOI: https://doi.org/10.3390/magnetochemistry6030031
Journal volume & issue: Vol. 6, no. 3
p. 31

Abstract

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We studied the spin-state dependence of the electrical conductivity of two nanocrystalline powder samples of the spin crossover complex [Fe(pyrazine){Au(CN)2}2]. By applying an external pressure (up to 3 kbar), we were able to tune the charge transport properties of the material from a more conductive low spin state to a crossover point toward a more conductive high spin state. We rationalize these results by taking into account the spin-state dependence of the activation parameters of the conductivity.

Published in Magnetochemistry

ISSN: 2312-7481 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry
Website: http://www.mdpi.com/journal/magnetochemistry

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