impurity defect
Quick Summary
An impurity defect in crystallography refers to the presence of foreign atoms within a crystal's regular atomic structure. These impurities can either replace host atoms at their lattice sites or occupy interstitial spaces between atoms.12
Impurity defects are crucial in the electrical properties of semiconductors, which are fundamental to electronic devices like computer chips. While pure semiconductors may not conduct electricity well, the deliberate addition of impurities significantly enhances their conductivity. For example, impurities are responsible for the vibrant colors of gemstones like sapphires (blue due to iron and titanium) and rubies (red due to chromium).12
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crystal defectImpurity defects are foreign atoms that replace some of the atoms making up the solid or that squeeze into the interstices; they are important in the electrical behavior of semiconductors, which are materials used in computer chips and other electronic devices.
Read MoreImpurity defects are foreign atoms that replace some of the atoms making up the solid or that squeeze into the interstices; they are important in the electrical behavior of semiconductors, which are materials used in computer chips and other electronic devices.
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crystalCrystal defectsIn another defect, called an impurity, an atom is present that is different from the host crystal atoms. Impurities may either occupy interstitial spaces or substitute for a host atom in its lattice site.
Read MoreIn another defect, called an impurity, an atom is present that is different from the host crystal atoms. Impurities may either occupy interstitial spaces or substitute for a host atom in its lattice site.
Read More