Synthesis, crystal structure and physical properties of europium - manganese fluoride pnictides, EuMnPnF (Pn = P, As, Sb)

Plokhikh, I. V. and Charkin, D. O. and Verchenko, V. Yu. and Kuznetsov, A. N. and Tsirlin, A. A. and Kazakov, S. M. and Shevelkov, A. V. (2018) Synthesis, crystal structure and physical properties of europium - manganese fluoride pnictides, EuMnPnF (Pn = P, As, Sb). JOURNAL OF SOLID STATE CHEMISTRY, 258. pp. 682-690. ISSN 0022-4596, 1095-726X

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Abstract

The quaternary compounds EuMnPnF (Pn = P, As, Sb) have been prepared via solid state route at 1173 K, and their crystal and electronic structures as well as magnetic and transport properties have been elucidated. These compounds belong to the widespread LaAgSO structure type and crystallize in tetragonal (P4/nmm) unit cells with a = 4.0292(1) angstrom, c = 8.9505(2) angstrom for EuMnPF, a = 4.1227(1) angstrom, c = 9.0846(2) angstrom for EuMnAsF, and a = 4.3120(1) angstrom, c = 9.4356(2) angstrom for EuMnSbF. At low temperatures, the magnetic response is dominated by Eu2+. Contrary to previous reports, we do not observe any magnetic transitions in EuMnPF down to 2 K, whereas its arsenide and antimonide analogs exhibit Eu2+ ordering around 3 K. According to the electrical resistivity measurements and density-functional calculations, all three compounds are narrow-gap semiconductors.

Item Type: Article
Uncontrolled Keywords: ZRCUSIAS; OXYPNICTIDES; CE; ND; Solid state synthesis; Layered structures; Electronic structure; Calculations; Magnetic measurements; Eu compounds
Subjects: 600 Technology > 615 Pharmacy
Divisions: Chemistry and Pharmacy > Institut für Anorganische Chemie > Chair Prof. Dr. Arno Pfitzner
Depositing User: Dr. Gernot Deinzer
Date Deposited: 20 Mar 2020 12:24
Last Modified: 20 Mar 2020 12:24
URI: https://pred.uni-regensburg.de/id/eprint/15127

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