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Magnetochemistry, Volume 8, Issue 5

May 2022 - 12 articles

Cover Story: Several experimental investigations on spin-crossover (SCO) materials conducted by Mössbauer spectroscopy, x-ray diffraction, and Brillouin scattering have shown that the Debye temperature in the low-spin (LS) state is higher than that of the high-spin (HS). These results suggest stronger (resp. weaker) interactions between LS-LS (resp. HS-HS) sites due to the volume contraction accompanying the spin transition from HS to LS. The present theoretical contribution is based on an Ising-like description of this phenomenon accounting for spin-state-dependent interaction parameters, which are denoted as J_HS-HS, J_HS-LS, and J_LS-LS. Usually, this quantity is considered to be constant in HS and LS. We analyze the effects of this approach on the equilibrium temperature as well as on the thermal hysteresis width’s, which is defined as the difference between the switching temperatures T_up and T_down. View this paper

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Article

3 Citations

2,576 Views

14 Pages

Heterometallic Chain Compounds of Tetrakis(µ-carboxylato)diruthenium and Tetracyanidoaurate

Masahiro Mikuriya,
Yusuke Tanaka,
Daisuke Yoshioka,
Motohiro Tsuboi,
Hidekazu Tanaka and
Makoto Handa

Magnetochemistry2022, 8(5), 48;https://doi.org/10.3390/magnetochemistry8050048

2 May 2022

Heterometallic complexes of tetrakis(µ-carboxylato)diruthenium(II,III) with tetracyanidoaurate(III) [Ru2(RCOO)4Au(CN)4]n (R = CH3 (1), C2H5 (2), i-C3H7 (3), and t-C4H9 (4)) were synthesized and characterized by C,H,N-elemental analysis and infr...

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Article

7 Citations

4,558 Views

15 Pages

Extending NMR Quantum Computation Systems by Employing Compounds with Several Heavy Metals as Qubits

Jéssica Boreli dos Reis Lino,
Mateus Aquino Gonçalves,
Stephan P. A. Sauer and
Teodorico Castro Ramalho

Magnetochemistry2022, 8(5), 47;https://doi.org/10.3390/magnetochemistry8050047

21 April 2022

Nuclear magnetic resonance (NMR) is a spectroscopic method that can be applied to several areas. Currently, this technique is also being used as an experimental quantum simulator, where nuclear spins are employed as quantum bits or qubits. The presen...

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Magnetochemistry - ISSN 2312-7481

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