Formation of NH4MgF3 and MgF2 nanoparticles from magnesium hydroxycarbonate in ammonium hydrofluoride melt
https://doi.org/10.17586/2220-8054-2025-16-6-897-907
Abstract
Ammonium fluorometalates with the perovskite structure NH4MF3 (M = 3d metals) are used for cathode materials and NH4MgF3 is used for solid electrolytes. There is only fragmentary information in the literature about the production of NH4MgF3 powder without available X-ray diffraction data. The conditions enable the synthesis of single-phase NH4MgF3 powder are proposed by reaction of magnesium hydroxycarbonate with ammonium hydrofluoride melt at a temperature of 220 ◦C. It has been established that the process is two-stage: the first reaction is the formation of the (NH4)2MgF4 compound and the second reaction is the decomposition of (NH4)2MgF4 at a temperature of 220 ◦C to NH4MgF3. Upon decomposition of NH4MgF3, anhydrous MgF2 nanoparticles (28 ± 7 nm) are formed. The proposed method for obtaining single-phase NH4MgF3 opens up opportunities for studying its functional properties.
Keywords
ammonium fluorometalate,
cubic perovskite structure,
magnesium fluoride,
nanoscale powders,
NH4MgF3,
ammonium hydrofluoride
Supporting agencies: The authors are grateful to I. A. Novikov for his help in conducting part the scanning electron microscopy. This research was performed using the equipment of the Shared Equipment Center of the Prokhorov General Physics Institute of the Russian Academy of Sciences and of the JRC PMR IGIC RAS. TEM studies were conducted using the equipment of the Centre for Collective Use “Materials Science and Metallurgy” (National University of Science and Technology “MISIS”).
About the Authors
A. A. Luginina
Prokhorov General Physics Institute of the Russian Academy of Sciences
Russian Federation
Russian Federation
Anna A. Luginina
Vavilova str. 38, Moscow
A. A. Alexandrov
Prokhorov General Physics Institute of the Russian Academy of Sciences; Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Russian Federation
Russian Federation
Alexander A. Alexandrov
Vavilova str. 38, Moscow; Leninskiy Prospekt, 31, Moscow
D. S. Yasyrkina
Prokhorov General Physics Institute of the Russian Academy of Sciences
Russian Federation
Russian Federation
Darya S. Yasyrkina
Vavilova str. 38, Moscow
J. A. Ermakova
Prokhorov General Physics Institute of the Russian Academy of Sciences
Russian Federation
Russian Federation
Julia A. Ermakova
Vavilova str. 38, Moscow
V. V. Tapero
Prokhorov General Physics Institute of the Russian Academy of Sciences; National University of Science and Technology (MISIS)
Russian Federation
Russian Federation
Victoria V. Tapero - Department of Materials Science of Semiconductors and Dielectrics
Vavilova str. 38, Moscow; Leninskiy Prospekt, 4, Moscow
S. V. Kuznetsov
Prokhorov General Physics Institute of the Russian Academy of Sciences
Russian Federation
Russian Federation
Sergey V. Kuznetsov
Vavilova str. 38, Moscow
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Review
For citations:
Luginina A.A., Alexandrov A.A., Yasyrkina D.S., Ermakova J.A., Tapero V.V., Kuznetsov S.V. Formation of NH4MgF3 and MgF2 nanoparticles from magnesium hydroxycarbonate in ammonium hydrofluoride melt. Nanosystems: Physics, Chemistry, Mathematics. 2025;16(6):897-907. https://doi.org/10.17586/2220-8054-2025-16-6-897-907
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