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Oxygen Self‐Diffusion in Single‐Crystal Mn‐Zn Ferrite
Author(s) -
Haneda Hajime,
Yamamura Hiroshi,
Watanabe Akio,
Shirasaki ShinIchi
Publication year - 1985
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.1151-2916.1985.tb15282.x
Subject(s) - oxygen , analytical chemistry (journal) , self diffusion , ferrite (magnet) , diffusion , oxygen 18 , single crystal , activation energy , isotopes of oxygen , materials science , chemistry , crystallography , nuclear chemistry , thermodynamics , physics , self service , organic chemistry , chromatography , marketing , business , composite material
Self‐diffusion coefficients for the oxygen ion in single‐crystal Mn‐Zn ferrite were determined by the gas‐solid isotope exchange technique. The oxygen volume diffusion coefficients can be expressed as D =6.70 × 10 −4 exp (‐330 (kJ /mol) /RT)m 2 /s (>1350°C), D=3.94 × 10 −10 exp (−137 (kJ/mol)/RT)m 2 /s (1100° to 1350°C), and D=7.82 × 10 4 exp (−507 (kJ/mol)/RT)m 2 /s (<1100°C).