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Mechanochemical Synthesis of Lanthanum Oxyfluoride from Lanthanum Oxide and Lanthanum Fluoride
Author(s) -
Lee Jaeryeong,
Zhang Qiwu,
Saito Fumio
Publication year - 2001
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2001.tb00753.x
Subject(s) - lanthanum , grinding , lanthanum oxide , ball mill , fluoride , crystallite , materials science , oxide , metallurgy , inorganic chemistry , nuclear chemistry , chemistry
A powder mixture of lanthanum oxide (La 2 O 3 ) and lanthanum fluoride (LaF 3 ) was ground by a planetary ball‐mill to investigate the mechanochemical reaction forming lanthanum oxyfluoride (LaOF) at room temperature. The grinding enables us to form LaOF monophase, and the reaction proceeds with an increase in grinding time, whereas the crystallite size of LaOF formed is about 15–20 nm irrespective of the grinding time. Other rare‐earth oxyfluorides (R–OF, R = Pr, Nd, Sm, Gd) can be synthesized by grinding the constituent components (R 2 O 3 and RF 3 ).