14 REDES DE BRAVAIS PDF

Las 14 Redes de Bravais. La mayoría de los sólidos tienen una estructura periódica de átomos, que forman lo que llamamos una red cristalina. Los sólidos y. In geometry and crystallography, a Bravais lattice, named after Auguste Bravais ( ), is an In this sense, there are 14 possible Bravais lattices in three- dimensional space. The 14 possible symmetry groups of Bravais lattices are 14 of the. Celdas unitarias, redes de Bravais, Parámetros de red, índices de Miller. abc√ 1-cos²α-cos²β-cos²γ+2cosα (todos diferentes) cosβ cos γ;

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The simple monoclinic is obtained by distorting the rectangular faces perpendicular to one of the orthorhombic axis into general parallelograms. International Tables for Crystallography. And the face-centered orthorhombic is obtrained by adding one lattice point in the center of each of the object’s faces.

The centering types identify the locations of the lattice points in the unit cell as follows:. Not all combinations of lattice systems and centering types are needed to describe all of the possible lattices, as it can be shown that several of these are in fact equivalent reces each other.

Additionally, there may be errors in any or all of the information fields; information on this file should not be considered reliable and the file should not be used until it has been reviewed and any needed corrections have been made. Views View Edit History. Once the review has been completed, this template should be removed. The body-centered orthorhombic is obtained by bravaid one lattice point in the center of the object.

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They are the simple cubebody-centered cubicand face-centered cubic. Retrieved from ” https: Retrieved from ” https: Archived braavais the original on The 14 possible symmetry groups of Bravais lattices are 14 of the space groups. The original uploader was Angrense at Portuguese Wikipedia. Files moved from pt.

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Bravzis crystal is made up of a periodic arrangement of one or more atoms the basisor motif repeated at each lattice point. By similarly stretching the body-centered cubic one more Bravais lattice of the tetragonal system is constructed, the centered tetragonal. All following user names refer to pt.

The simple trigonal or rhombohedral is obtained by stretching a cube along one of its axis. By using this site, you agree to the Terms of Use and Privacy Policy. There are fourteen distinct space ve that a Bravais lattice can have. Crystal habit Crystal system Miller index Translation operator quantum mechanics Translational symmetry Zone axis. In two-dimensional space, there are 5 Bravais lattices, [2] grouped into four crystal families. Views Read Edit View history.

The simple hexagonal bravais has the hexagonal point group and is the only bravais lattice in the hexagonal system. This file was moved to Wikimedia Commons from pt. The following other wikis use this file: Of these, 23 are primitive and 41 are centered.

The original description page was here. Consequently, the crystal looks the same when viewed from any equivalent lattice point, namely those separated by the translation of one unit cell. This page was last edited on 22 Aprilat Crystallography Condensed matter physics Lattice points.

In three-dimensional space, there are 14 Bravais lattices. You may do so in any reasonable manner, but not in any way btavais suggests the licensor endorses you or your use. Ten Bravais lattices split into enantiomorphic pairs. The properties of the lattice systems are given below:. From Wikimedia Commons, the free media repository. From Wikipedia, the free encyclopedia.

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The fourteen Bravais lattices

The destruction of the cube reees completed by moving the parallelograms of the orthorhombic so that no axis is perpendicular to the other two. In other projects Wikimedia Commons.

This licensing tag was added to this file as part of the GFDL licensing update. Similarly, all A- or B-centred lattices can be described either by a C- or P-centering. The properties of the crystal families are given below:. Dd details about this file, see below. The base orthorhombic is obtained by adding a lattice point on two opposite sides of one object’s face.

By using this site, you agree to the Terms of Use and Privacy Policy. GraphiteZnOCdS. Thus, from the point of view of symmetry, there are fourteen different kinds of Bravais lattices.

This discrete set of vectors must be closed under vector addition and subtraction. Auguste Bravais was the first to count the categories correctly.

The simple triclinic produced has no restrictions except that pairs of opposite faces are parallel. For any choice of position vector Rthe lattice looks exactly the same. The simple orthorhombic is made by deforming the square bases of the tetragonal into rectangles, producing an object with mutually perpendicular sides of three unequal lengths.

Tetragonal 2 lattices The simple tetragonal is made by pulling on two opposite faces of the simple cubic and stretching it into a rectangular prism with a square base, but a height not equal to the sides of the square.

In this sense, there are 14 possible Bravais lattices in three-dimensional space.