Magnetic resonance properties of the low-dimensional antiferromagnet Mn[C10H6(OH)(COO−)]2∙2H2O

Dergachev, K. G.; Kobets, M. I.; Khats’ko, E. N.; Lang, M.; Pashchenko, V. A.

doi:10.1063/1.2178475

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Research Article| March 01 2006

Magnetic resonance properties of the low-dimensional antiferromagnet $Mn [C_{10} H_{6} (OH) ({COO}^{-})]_{2} ∙ 2 H_{2} O$

K. G. Dergachev;

K. G. Dergachev

B. Verkin Institute for Low Temperature Physics and Engineering

, National Academy of Sciences of Ukraine, pr. Lenina 47, Kharkov 61103, Ukraine

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M. I. Kobets;

M. I. Kobets

B. Verkin Institute for Low Temperature Physics and Engineering

, National Academy of Sciences of Ukraine, pr. Lenina 47, Kharkov 61103, Ukraine

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E. N. Khats’ko;

E. N. Khats’ko ^a)

B. Verkin Institute for Low Temperature Physics and Engineering

, National Academy of Sciences of Ukraine, pr. Lenina 47, Kharkov 61103, Ukraine

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M. Lang;

M. Lang

Physikalisches Institut,

Universität at Frankfurt

, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany

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V. A. Pashchenko

B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, pr. Lenina 47, Kharkov 61103, Ukraine; Physikalisches Institut,

Universität at Frankfurt

, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany

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Author & Article Information

K. G. Dergachev

B. Verkin Institute for Low Temperature Physics and Engineering

, National Academy of Sciences of Ukraine, pr. Lenina 47, Kharkov 61103, Ukraine

M. I. Kobets

B. Verkin Institute for Low Temperature Physics and Engineering

, National Academy of Sciences of Ukraine, pr. Lenina 47, Kharkov 61103, Ukraine

E. N. Khats’ko ^a)

B. Verkin Institute for Low Temperature Physics and Engineering

, National Academy of Sciences of Ukraine, pr. Lenina 47, Kharkov 61103, Ukraine

M. Lang

Physikalisches Institut,

Universität at Frankfurt

, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany

V. A. Pashchenko

B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, pr. Lenina 47, Kharkov 61103, Ukraine; Physikalisches Institut,

Universität at Frankfurt

, Max-von-Laue-Strasse 1, 60438 Frankfurt, Germany

^a)

E-mail: [email protected]

Low Temp. Phys. 32, 228–235 (2006)

https://doi.org/10.1063/1.2178475

Magnetic resonance studies of the metalorganic antiferromagnet $Mn [C_{10} H_{6} (OH) ({COO}^{-})]_{2} ∙ 2 H_{2} O$ are carried out over a wide range of frequencies (25– $12 GHz$ ⁠) and temperatures (1.8– $300 K$ ⁠). The data on the temperature dependence of the magnetic susceptibility attest to a low-dimensional magnetic structure of this crystal. The results of resonance studies at a temperature of $1.8 K$ are used to construct the frequency–field diagram of the antiferromagnetic resonance spectrum of this compound; it is described by the model of a biaxial rhombic antiferromagnet with the following parameters: $ν_{01} = 14.1 \pm 0.1 GHz$ ⁠, $ν_{02} = 44.2 \pm 0.1 GHz$ ⁠, $H_{a 1} = 0.25 kOe$ ⁠, $H_{a 2} = 2.53 kOe$ ⁠, $H_{s f} = 5.1 \pm 0.1 kOe$ ⁠, $2 H_{e} = 98 \pm 1 kOe$ ⁠. Two-magnon and nonresonance three-magnon absorption is observed, and the weakest interchain exchange interaction is estimated as $J^{'} = 6.2 \times 10^{- 3} K$ ⁠.

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2006

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Magnetic resonance properties of the low-dimensional antiferromagnet $Mn [C_{10} H_{6} (OH) ({COO}^{-})]_{2} ∙ 2 H_{2} O$

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Magnetic resonance properties of the low-dimensional antiferromagnet $Mn [C_{10} H_{6} (OH) ({COO}^{-})]_{2} ∙ 2 H_{2} O$