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Category: Specific Structures

link to Close-Packed Rhombohedral (Sm-type) Unit Cell

Close-Packed Rhombohedral (Sm-type) Unit Cell

The Close-Packed Rhombohedral (abbreviated CPR in this article) is more commonly known as the Samarium-type crystal, because Sm is the first element to display this crystal structure. Technically,...

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link to Double Hexagonal Close-Packed (La-type) Unit Cell

Double Hexagonal Close-Packed (La-type) Unit Cell

The Double Hexagonal Close-Packed (DHCP) crystal structure is another close-packed, hexagonal crystal structure; however, this is not a very common crystal structure, so I’m assuming if you’re...

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link to Triclinic Unit Cell

Triclinic Unit Cell

The triclinic Bravais lattice is the most general Bravais lattice, with no symmetry requirements. For this reason, it is sometimes called the “asymmetric” lattice or crystal structure. Triclinic...

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link to Base-Centered Monoclinic Unit Cell

Base-Centered Monoclinic Unit Cell

The monoclinic unit cell has three lattice parameters a, b, and c that each have different lengths; two vector angles α and γ are at 90º to each other, and the third vector angle β is not....

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link to Simple Monoclinic Unit Cell

Simple Monoclinic Unit Cell

The monoclinic unit cell has three lattice parameters a, b, and c that each have different lengths; two vector angles α and γ are at 90º to each other, and the third vector angle β is...

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link to Base-Centered Orthorhombic Unit Cell

Base-Centered Orthorhombic Unit Cell

The orthorhombic cell looks like a box with 3 different edge lengths. Base-centering means there is an extra lattice point at two opposite faces, which I will call the “top” and...

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