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Anisotropy, geometric structure and frustration effects in molecule-based nanomagnets

G Kamieniarz, P Kozlowski, M Antkowiak, P Sobczak, T Slusarski, Daria M. Tomecka UGent, A Barasinski, B Brzostowski, A Drzewinski and A Bienko, et al. (2012) ACTA PHYSICA POLONICA A. 121(5-6). p.992-998
abstract
In this paper we review our results of comprehensive study of molecular nanomagnets recently synthesized in the form of the chromium-based molecules and bimetallic copper-containing chains as well as we present some new findings. We focus on effects of anisotropy, geometry and frustration appearing in various thermodynamic properties of the nanoscale magnets which are described by Heisenberg-like spin models and simulated by accurate numerical methods. We show that bond-dependent exchange anisotropy is needed to model magnetic torque in the Cd-doped chromium ring. We argue that only in the limit of infinite rings (n -> infinity) frustration can be considered as the opposite to bipartiteness in the odd numbered (3 <= n <= 9) s = 3/2 quantum spin rings. We analyse the influence of exchange interactions and anisotropy on magnetic susceptibility of bimetallic (S = 3/2, s = 1/2) chains composed of Cu ions linked to different 3d ions by fitting experimental data. We reach the remarkable consistency of the density functional theory estimates of the magnetic couplings in Crs molecule and provide strong support to the spin models exploited in the literature.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (proceedingsPaper)
publication status
published
subject
keyword
WHEELS, MODELS, SIMULATIONS, SINGLE-ION, SYSTEMS, BIMETALLIC CHAIN, SPIN QUBITS, ANTIFERROMAGNETIC RING, MAGNETIC-PROPERTIES, CHROMIUM-BASED RING
journal title
ACTA PHYSICA POLONICA A
Acta Phys. Pol. A
volume
121
issue
5-6
pages
992 - 998
conference name
European Conference on Physics of Magnetism (PM)
conference location
Poznań, Poland
conference start
2011-06-27
conference end
2011-07-01
Web of Science type
Article; Proceedings Paper
Web of Science id
000304789500005
JCR category
PHYSICS, MULTIDISCIPLINARY
JCR impact factor
0.531 (2012)
JCR rank
67/83 (2012)
JCR quartile
4 (2012)
ISSN
0587-4246
language
English
UGent publication?
no
classification
A1
id
1996280
handle
http://hdl.handle.net/1854/LU-1996280
alternative location
http://przyrbwn.icm.edu.pl/APP/apphome.html
date created
2012-01-19 12:32:55
date last changed
2012-10-01 16:00:53
@article{1996280,
  abstract     = {In this paper we review our results of comprehensive study of molecular nanomagnets recently synthesized in the form of the chromium-based molecules and bimetallic copper-containing chains as well as we present some new findings. We focus on effects of anisotropy, geometry and frustration appearing in various thermodynamic properties of the nanoscale magnets which are described by Heisenberg-like spin models and simulated by accurate numerical methods. We show that bond-dependent exchange anisotropy is needed to model magnetic torque in the Cd-doped chromium ring. We argue that only in the limit of infinite rings (n -{\textrangle} infinity) frustration can be considered as the opposite to bipartiteness in the odd numbered (3 {\textlangle}= n {\textlangle}= 9) s = 3/2 quantum spin rings. We analyse the influence of exchange interactions and anisotropy on magnetic susceptibility of bimetallic (S = 3/2, s = 1/2) chains composed of Cu ions linked to different 3d ions by fitting experimental data. We reach the remarkable consistency of the density functional theory estimates of the magnetic couplings in Crs molecule and provide strong support to the spin models exploited in the literature.},
  author       = {Kamieniarz, G and Kozlowski, P and Antkowiak, M and Sobczak, P and Slusarski, T and Tomecka, Daria M. and Barasinski, A and Brzostowski, B and Drzewinski, A and Bienko, A and Mrozinski, J},
  issn         = {0587-4246},
  journal      = {ACTA PHYSICA POLONICA A},
  keyword      = {WHEELS,MODELS,SIMULATIONS,SINGLE-ION,SYSTEMS,BIMETALLIC CHAIN,SPIN QUBITS,ANTIFERROMAGNETIC RING,MAGNETIC-PROPERTIES,CHROMIUM-BASED RING},
  language     = {eng},
  location     = {Pozna\'{n}, Poland},
  number       = {5-6},
  pages        = {992--998},
  title        = {Anisotropy, geometric structure and frustration effects in molecule-based nanomagnets},
  url          = {http://przyrbwn.icm.edu.pl/APP/apphome.html},
  volume       = {121},
  year         = {2012},
}

Chicago
Kamieniarz, G, P Kozlowski, M Antkowiak, P Sobczak, T Slusarski, Daria M. Tomecka, A Barasinski, et al. 2012. “Anisotropy, Geometric Structure and Frustration Effects in Molecule-based Nanomagnets.” Acta Physica Polonica A 121 (5-6): 992–998.
APA
Kamieniarz, G, Kozlowski, P., Antkowiak, M., Sobczak, P., Slusarski, T., Tomecka, D. M., Barasinski, A., et al. (2012). Anisotropy, geometric structure and frustration effects in molecule-based nanomagnets. ACTA PHYSICA POLONICA A, 121(5-6), 992–998. Presented at the European Conference on Physics of Magnetism (PM).
Vancouver
1.
Kamieniarz G, Kozlowski P, Antkowiak M, Sobczak P, Slusarski T, Tomecka DM, et al. Anisotropy, geometric structure and frustration effects in molecule-based nanomagnets. ACTA PHYSICA POLONICA A. 2012;121(5-6):992–8.
MLA
Kamieniarz, G, P Kozlowski, M Antkowiak, et al. “Anisotropy, Geometric Structure and Frustration Effects in Molecule-based Nanomagnets.” ACTA PHYSICA POLONICA A 121.5-6 (2012): 992–998. Print.