Calculate the linear density of ions along the [111] direction UO2, which has the CaF2 structure (Figure 1).

Figure 1:

Fluorite (CaF2) unit cell showing (a) ion positions and (b) full-size ions. [Part (b) courtesy of Accelrys, Inc.]

Transcribed Image Text:

O Ca²+ F™ Fions located at corners of a cube (at one-quarter of the distance along the body diagonal) (b) (a) Structure: fluorite (CaF₂) type Bravais lattice: fcc Ions/unit cell: 4Ca²++8F- Typical ceramics: UO₂, ThO₂, and TeO₂ O Ca²+ F™ Fions located at corners of a cube (at one-quarter of the distance along the body diagonal) (b) (a) Structure: fluorite (CaF₂) type Bravais lattice: fcc Ions/unit cell: 4Ca²++8F- Typical ceramics: UO₂, ThO₂, and TeO₂

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The structure of UO 2 unit cell is shown below The 111 direction line ... View the full answer