Magnetic Response of Mn(III)F(salen) at Low Temperatures

• Authors: J. Park , O. Risset , M. Shiddiq , M. Peprah , E. Knowles , M. Andrus , C. Beedle , G. Ehlers , A. Podlesnyak , E. Čižmár , S. Nagler , S. Hill , D. Talham , M. Meisel
• Languages of publication: EN

Abstracts

EN

The low temperature magnetic response of Mn(III)F(salen), salen = H_{14}C_{16}N_{2}O_{2}, an S=2 linear-chain system, has been studied. Using a single crystal with the field applied perpendicular to the chain direction, torque magnetometry, down to 20 mK and up to 18 T, revealed a feature at 3.8 T when T ≤ 400 mK. ESR ( ≈200 GHz) studies, using single crystals at 4 K and in 5 T, have not detected any signal. In 10 mT, the temperature dependence of the susceptibility of powder-like samples can be reasonably fit when J/k_{B}=50 K and g=2. In addition, these data are unchanged for P ≤1.0 GPa. Using a randomly-oriented, powder-like, deuterated (12 of 14 H replaced by D) sample of 2.2 g at 270 mK, neutron scattering data, acquired with the Cold Neutron Chopper Spectrometer at the Spallation Neutron Source, show several well defined excitations that may be from the zero-field energy levels of antiferromagnetic S=2 spins with g=2, J/k_{B}=50 K, D/k_{B}=2.8 K, and E/k_{B}=0.5 K.

Keywords

EN

75.50.Ee; 78.70.Nx; 76.30.-v; 75.10.Jm

Discipline

• 78.70.Nx: Neutron inelastic scattering
• 75.50.Ee: Antiferromagnetics
• 75.10.Jm: Quantized spin models, including quantum spin frustration
• 76.30.-v: Electron paramagnetic resonance and relaxation(see also 33.35.+r Electron resonance and relaxation in atomic and molecular physics; 87.80.Lg Magnetic and paramagnetic resonance in biological physics)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 1
• Pages: 228-229

Dates

published

2014-07

Contributors

author

J. Park

• National High Magnetic Field Laboratory (NHMFL), Florida State Univ., Tallahassee, FL 32310-3706, USA

author

O. Risset

• Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA

author

M. Shiddiq

• Department of Physics and NHMFL, Florida State University, Tallahassee, FL 32310-3706, USA

author

M. Peprah

• Department of Physics and NHMFL, University of Florida, Gainesville, FL 32611-8440, USA

author

E. Knowles

• Department of Physics and NHMFL, University of Florida, Gainesville, FL 32611-8440, USA

author

M. Andrus

• Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA

author

C. Beedle

• National High Magnetic Field Laboratory (NHMFL), Florida State Univ., Tallahassee, FL 32310-3706, USA

author

G. Ehlers

• Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6477, USA

author

A. Podlesnyak

• Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6477, USA

author

E. Čižmár

• Institute of Physics, Faculty of Science, P.J. Šafárik University, Park Angelinum 9, 04154 Košice, Slovakia

author

S. Nagler

• Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6477, USA

author

S. Hill

• Department of Physics and NHMFL, Florida State University, Tallahassee, FL 32310-3706, USA

author

D. Talham

• Department of Chemistry, University of Florida, Gainesville, FL 32611-7200, USA

author

M. Meisel

• Department of Physics and NHMFL, University of Florida, Gainesville, FL 32611-8440, USA
• Institute of Physics, Faculty of Science, P.J. Šafárik University, Park Angelinum 9, 04154 Košice, Slovakia

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Identifiers

DOI

10.12693/APhysPolA.126.228