GATE Physics 2025 | Q 12 |Condensed Matter Physics |IIT скачать в хорошем качестве

GATE Physics 2025 | Q 12 |Condensed Matter Physics |IIT

Q.12 Consider a crystal that has a basis of one atom. Its primitive vectors are 𝑎1⃗⃗⃗⃗ =𝑎𝑖̂ , � �2⃗⃗⃗⃗ =𝑎𝑗̂ , 𝑎3⃗⃗⃗⃗ =𝑎 2 (𝑖̂+𝑗̂+𝑘 ̂), where 𝑖̂, 𝑗̂, 𝑘 ̂ are the unit vectors in the 𝑥,𝑦 and 𝑧 directions of the Cartesian coordinate system and 𝑎 is a positive constant. Which one of the following is the correct option regarding the type of the Bravais lattice? (A) It is BCC and the volume of the primitive cell is 𝑎3 2 (B) It is FCC and the volume of the primitive cell is 𝑎3 4 (C) It is BCC and the volume of the primitive cell is 𝑎3 8 (D) It is FCC and the volume of the primitive cell is 𝑎3