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ESR Study of Cerium (IV) Oxide in Vacuum Air and Hydrogen
Author(s) -
Steinberg M.
Publication year - 1970
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.197000112
Subject(s) - chemistry , cerium oxide , oxide , cerium , hydrogen , stoichiometry , inorganic chemistry , absorption (acoustics) , analytical chemistry (journal) , organic chemistry , optics , physics
Cerium (IV) oxide prepared at high temperatures in air shows ESR absorption signals. The oxide prepared at low temperatures shows very diffuse signals. Heating the oxide in vacuum at 1000° or in hydrogen at 298° results in a reduction of the intensity of the signal. A theory was developed to show that the ESR signal is obtained from the quasi free electron in non‐stoichiometric ceria.