https://orcid.org/0000-0001-9560-4728 https://orcid.org/0000-0002-5149-603X https://orcid.org/0000-0002-6776-1213 https://orcid.org/0000-0003-0698-4891 https://orcid.org/0000-0001-7564-7990 PODO focuses on the description of point defects in crystalline materials. Point Defects Ontology (PODO) Examples of a Contributor include a person, an organization, or a service. Typically, the name of a Contributor should be used to indicate the entity. Contributor An entity responsible for making contributions to the resource. Examples of a Creator include a person, an organization, or a service. Typically, the name of a Creator should be used to indicate the entity. Creator An entity primarily responsible for making the resource. Description may include but is not limited to: an abstract, a table of contents, a graphical representation, or a free-text account of the resource. Description An account of the resource. Title A name given to the resource. In current practice, this term is used primarily with literal values; however, there are important uses with non-literal values as well. As of December 2007, the DCMI Usage Board is leaving this range unspecified pending an investigation of options. The range of skos:altLabel is the class of RDF plain literals. skos:prefLabel, skos:altLabel and skos:hiddenLabel are pairwise disjoint properties. alternative label An alternative lexical label for a resource. Acronyms, abbreviations, spelling variants, and irregular plural/singular forms may be included among the alternative labels for a concept. Mis-spelled terms are normally included as hidden labels (see skos:hiddenLabel). definition A statement or formal explanation of the meaning of a concept. example An example of the use of a concept. A general note, for any purpose. A resource has no more than one value of skos:prefLabel per language tag, and no more than one value of skos:prefLabel without language tag. The range of skos:prefLabel is the class of RDF plain literals. skos:prefLabel, skos:altLabel and skos:hiddenLabel are pairwise disjoint properties. preferred label The preferred lexical label for a resource, in a given language. has number of vacancies A data property indicating the total number of vacancies in the crystal structure. Note that the vacancy concentration is given as a fraction, with a value from 0 to 1. has vacancy concentration A data property indicating the vacancy concentration. Reference: ISBN 978-1-119-45416-8 Antisite Defect Antisite Defect is a point defect which occurs in ordered alloys or compounds when two atoms of different type switch positions. Reference: ISBN 978-1-119-45416-8 Frenkel Defect Frenkel Pair A Frenkel defect is a point defect which occurs in ionic crystals when an ion is removed to an interstitial position, leaving a vacancy behind. Impurity An impurity is a point defect where foreign atoms (of different type as the host atom) enter the crystal lattice. Interstitial An interstitial is a point defect where an atom occupies an interstitial site. In crystallography, interstitial sites are the empty space between the atoms (assuming a hard-sphere model). Interstitial Impurity A interstitial impurity is a point defect where the atom occupying the interstitial site is of a different type as the matrix. Point Defect A point defect is a crystalline defect which is localized at or around a single lattice point. It is considered to be a zero-dimensional defect because it does not extend in any dimension in the lattice. Schottky Defect A Schottky defect is a point defect which occurs in ionic crystals when oppositely charged ions create a vacancy in the interior of the lattice and go to the surface. Self-interstitial A self-interstitial is an insterstitial defect where the atom occupying the interstitial site is of the same type as the matrix. Substitutional Impurity A substitutional impurity is an impurity where an atom of different type replaces a host or matrix atom. Vacancy A vacancy is a point defect in which an atom is missing from its original lattice site. A meaningful collection of concepts. An idea or notion; a unit of thought. A set of concepts, optionally including statements about semantic relationships between those concepts. Thesauri, classification schemes, subject heading lists, taxonomies, 'folksonomies', and other types of controlled vocabulary are all examples of concept schemes. Concept schemes are also embedded in glossaries and terminologies. An ordered collection of concepts, where both the grouping and the ordering are meaningful. skos:broadMatch is used to state a hierarchical mapping link between two conceptual resources in different concept schemes. Relates a concept to a concept that is more general in meaning. skos:broaderTransitive is a transitive superproperty of skos:broader. A note about a modification to a concept. skos:closeMatch is used to link two concepts that are sufficiently similar that they can be used interchangeably in some information retrieval applications. In order to avoid the possibility of "compound errors" when combining mappings across more than two concept schemes, skos:closeMatch is not declared to be a transitive property. A note for an editor, translator or maintainer of the vocabulary. skos:exactMatch is used to link two concepts, indicating a high degree of confidence that the concepts can be used interchangeably across a wide range of information retrieval applications. skos:exactMatch is a transitive property, and is a sub-property of skos:closeMatch. Relates, by convention, a concept scheme to a concept which is topmost in the broader/narrower concept hierarchies for that scheme, providing an entry point to these hierarchies. A lexical label for a resource that should be hidden when generating visual displays of the resource, but should still be accessible to free text search operations. A note about the past state/use/meaning of a concept. Relates a resource (for example a concept) to a concept scheme in which it is included. Relates two concepts coming, by convention, from different schemes, and that have comparable meanings Relates a collection to one of its members. Relates an ordered collection to the RDF list containing its members. skos:narrowMatch is used to state a hierarchical mapping link between two conceptual resources in different concept schemes. Relates a concept to a concept that is more specific in meaning. skos:narrowerTransitive is a transitive superproperty of skos:narrower. A notation, also known as classification code, is a string of characters such as "T58.5" or "303.4833" used to uniquely identify a concept within the scope of a given concept scheme. Relates a concept to a concept with which there is an associative semantic relationship. skos:relatedMatch is used to state an associative mapping link between two conceptual resources in different concept schemes. A note that helps to clarify the meaning and/or the use of a concept. Links a concept to a concept related by meaning. Relates a concept to the concept scheme that it is a top level concept of.