Research output: Contribution to journal › Article › peer-review
Morphological and dynamical evolution of lanthanum fluoride 2D nanocrystals at thermal treatment. / Gulina, L. B.; Weigler, M.; Privalov, A. F.; Касаткин, Игорь Алексеевич; Tolstoy, V. P.; Murin, I. V.; Vogel, M.
In: Solid State Ionics, Vol. 352, 115354, 09.2020.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Morphological and dynamical evolution of lanthanum fluoride 2D nanocrystals at thermal treatment
AU - Gulina, L. B.
AU - Weigler, M.
AU - Privalov, A. F.
AU - Касаткин, Игорь Алексеевич
AU - Tolstoy, V. P.
AU - Murin, I. V.
AU - Vogel, M.
PY - 2020/9
Y1 - 2020/9
N2 - A detailed study of the morphological evolution of 2-dimensional LaF3 nanocrystals under the thermal treatment in air was performed. XRD, SEM, TEM and 19F MAS NMR techniques were used to characterize the aggregation process of nanocrystals. 19F NMR relaxometry and diffusometry were applied to investigate changes in the dynamics of the fluorine ions. Heating of nano-structured LaF3 above 800 K led to crystallite growth accompanied by a deceleration of ionic motion, as seen from the NMR relaxation and diffusion data. The effect is dependent on the annealing temperature, and its enhancement above 1000 K causes the morphology and dynamics of the 2D nanocrystals to approach that of the bulk material. 19F MAS NMR confirms that the local structure of annealed 2D LaF3 is identical to that of the bulk material.
AB - A detailed study of the morphological evolution of 2-dimensional LaF3 nanocrystals under the thermal treatment in air was performed. XRD, SEM, TEM and 19F MAS NMR techniques were used to characterize the aggregation process of nanocrystals. 19F NMR relaxometry and diffusometry were applied to investigate changes in the dynamics of the fluorine ions. Heating of nano-structured LaF3 above 800 K led to crystallite growth accompanied by a deceleration of ionic motion, as seen from the NMR relaxation and diffusion data. The effect is dependent on the annealing temperature, and its enhancement above 1000 K causes the morphology and dynamics of the 2D nanocrystals to approach that of the bulk material. 19F MAS NMR confirms that the local structure of annealed 2D LaF3 is identical to that of the bulk material.
KW - F NMR spectroscopy
KW - Crystallite size
KW - Dynamics
KW - Fluoride ion motion
KW - Nanoionics
KW - LAF3
KW - SENSOR
KW - IONIC-CONDUCTIVITY
KW - F-19 NMR spectroscopy
KW - MICROSTRUCTURES
KW - NANOPARTICLES
KW - NMR
KW - TRANSPORT
KW - CRYSTALS
KW - 19F NMR spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85084955807&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/a88c7f26-cb7a-3b5b-8558-88e8f3c55dfa/
U2 - 10.1016/j.ssi.2020.115354
DO - 10.1016/j.ssi.2020.115354
M3 - Article
AN - SCOPUS:85084955807
VL - 352
JO - Solid State Ionics
JF - Solid State Ionics
SN - 0167-2738
M1 - 115354
ER -
ID: 60182090