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Title: Kinetic effects on double hysteresis in spin crossover molecular magnets analyzed with first order reversal curve diagram technique

Abstract

In this paper, we analyze two types of hysteresis in spin crossover molecular magnets compounds in the framework of the First Order Reversal Curve (FORC) method. The switching between the two stable states in these compounds is accompanied by hysteresis phenomena if the intermolecular interactions are higher than a threshold. We have measured the static thermal hysteresis (TH) and the kinetic light induced thermal hysteresis (LITH) major loops and FORCs for the polycrystalline Fe(II) spin crossover compound [Fe{sub 1−x}Zn{sub x}(bbtr){sub 3}](ClO{sub 4}){sub 2} (bbtr = 1,4-di(1,2,3-triazol-1-yl)butane), either in a pure state (x = 0) or doped with Zn ions (x = 0.33) considering different sweeping rates. Here, we use this method not only to infer the domains distribution but also to disentangle between kinetic and static components of the LITH and to estimate the changes in the intermolecular interactions introduced by dopants. We also determined the qualitative relationship between FORC distributions measured for TH and LITH.

Authors:
; ; ;  [1];  [1];  [2];  [3]
  1. Faculty of Physics, Alexandru Ioan Cuza University, 700506 Iasi (Romania)
  2. (United Kingdom)
  3. Faculty of Chemistry, University of Wroclaw, 50-383 Wroclaw (Poland)
Publication Date:
OSTI Identifier:
22409955
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BUTANE; DIAGRAMS; DOMAIN STRUCTURE; DOPED MATERIALS; HYSTERESIS; INTERMOLECULAR FORCES; IRON COMPOUNDS; MAGNETIC MATERIALS; MAGNETS; ORGANIC CHLORINE COMPOUNDS; POLYCRYSTALS; SPIN; VISIBLE RADIATION; ZINC IONS

Citation Formats

Stan, Raluca-Maria, Gaina, Roxana, Enachescu, Cristian, E-mail: cristian.enachescu@uaic.ro, E-mail: radu.tanasa@uaic.ro, Stancu, Alexandru, Tanasa, Radu, E-mail: cristian.enachescu@uaic.ro, E-mail: radu.tanasa@uaic.ro, Department of Engineering, University of Cambridge, CB2 1PZ Cambridge, and Bronisz, Robert. Kinetic effects on double hysteresis in spin crossover molecular magnets analyzed with first order reversal curve diagram technique. United States: N. p., 2015. Web. doi:10.1063/1.4918961.
Stan, Raluca-Maria, Gaina, Roxana, Enachescu, Cristian, E-mail: cristian.enachescu@uaic.ro, E-mail: radu.tanasa@uaic.ro, Stancu, Alexandru, Tanasa, Radu, E-mail: cristian.enachescu@uaic.ro, E-mail: radu.tanasa@uaic.ro, Department of Engineering, University of Cambridge, CB2 1PZ Cambridge, & Bronisz, Robert. Kinetic effects on double hysteresis in spin crossover molecular magnets analyzed with first order reversal curve diagram technique. United States. doi:10.1063/1.4918961.
Stan, Raluca-Maria, Gaina, Roxana, Enachescu, Cristian, E-mail: cristian.enachescu@uaic.ro, E-mail: radu.tanasa@uaic.ro, Stancu, Alexandru, Tanasa, Radu, E-mail: cristian.enachescu@uaic.ro, E-mail: radu.tanasa@uaic.ro, Department of Engineering, University of Cambridge, CB2 1PZ Cambridge, and Bronisz, Robert. Thu . "Kinetic effects on double hysteresis in spin crossover molecular magnets analyzed with first order reversal curve diagram technique". United States. doi:10.1063/1.4918961.
@article{osti_22409955,
title = {Kinetic effects on double hysteresis in spin crossover molecular magnets analyzed with first order reversal curve diagram technique},
author = {Stan, Raluca-Maria and Gaina, Roxana and Enachescu, Cristian, E-mail: cristian.enachescu@uaic.ro, E-mail: radu.tanasa@uaic.ro and Stancu, Alexandru and Tanasa, Radu, E-mail: cristian.enachescu@uaic.ro, E-mail: radu.tanasa@uaic.ro and Department of Engineering, University of Cambridge, CB2 1PZ Cambridge and Bronisz, Robert},
abstractNote = {In this paper, we analyze two types of hysteresis in spin crossover molecular magnets compounds in the framework of the First Order Reversal Curve (FORC) method. The switching between the two stable states in these compounds is accompanied by hysteresis phenomena if the intermolecular interactions are higher than a threshold. We have measured the static thermal hysteresis (TH) and the kinetic light induced thermal hysteresis (LITH) major loops and FORCs for the polycrystalline Fe(II) spin crossover compound [Fe{sub 1−x}Zn{sub x}(bbtr){sub 3}](ClO{sub 4}){sub 2} (bbtr = 1,4-di(1,2,3-triazol-1-yl)butane), either in a pure state (x = 0) or doped with Zn ions (x = 0.33) considering different sweeping rates. Here, we use this method not only to infer the domains distribution but also to disentangle between kinetic and static components of the LITH and to estimate the changes in the intermolecular interactions introduced by dopants. We also determined the qualitative relationship between FORC distributions measured for TH and LITH.},
doi = {10.1063/1.4918961},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}