FE Review: Mechanics of Materials
Fe₂O₃isCorundumstructuredandcrystallizesinthetrigonalR̅3cspacegroup.Fe³⁺isbondedtosixequivalentO²⁻atomstoformamixtureofdistorted ...,AllFe-Obondlengthsare2.06Å.O²⁻isbondedinadistortedrectangularsee-saw-likegeometrytooneFe²⁺andthreeequivalentFe³⁺a...。參考影片的文章的如下: