{"cited_by_count":1028112,"description":"This cluster of papers focuses on the advancements in the research of nonlinear optical materials, particularly in the domain of crystallographic computing, deep-ultraviolet materials, second harmonic generation, inorganic crystal structures, chalcogenide clusters, bond valence model, fluorooxoborates, metal chalcogenides, and crystal growth.","display_name":"Crystal Structures and Properties","domain_id":"3","external_ids":{"openalex":"https://openalex.org/T10939","wikipedia":"https://en.wikipedia.org/wiki/Nonlinear_optical_material"},"field_id":"25","id":"T10939","keywords":[{"display_name":"bond lengths","id":"bond-lengths","score":0.2979,"url":"https://openalex.org/keywords/bond-lengths"},{"display_name":"coordination geometry","id":"coordination-geometry","score":0.2886,"url":"https://openalex.org/keywords/coordination-geometry"},{"display_name":"octahedral tilt angles","id":"octahedral-tilt-angles","score":0.3859,"url":"https://openalex.org/keywords/octahedral-tilt-angles"},{"display_name":"monoclinic P2_1/c","id":"monoclinic-p2-1-c","score":0.3165,"url":"https://openalex.org/keywords/monoclinic-p2-1-c"},{"display_name":"octahedral tilt","id":"octahedral-tilt","score":0.3828,"url":"https://openalex.org/keywords/octahedral-tilt"},{"display_name":"ternary chalcogenide","id":"ternary-chalcogenide-semiconductors","score":0.5358,"url":"https://openalex.org/keywords/ternary-chalcogenide-semiconductors"},{"display_name":"two-dimensional layered structure","id":"two-dimensional-layered-structure","score":0.3352,"url":"https://openalex.org/keywords/two-dimensional-layered-structure"},{"display_name":"corner-sharing polyhedra","id":"corner-sharing-polyhedra","score":0.629,"url":"https://openalex.org/keywords/corner-sharing-polyhedra"},{"display_name":"PO4 tetrahedra","id":"po4-tetrahedra","score":0.4311,"url":"https://openalex.org/keywords/po4-tetrahedra"},{"display_name":"orthorhombic Pnma","id":"orthorhombic-pnma","score":0.3659,"url":"https://openalex.org/keywords/orthorhombic-pnma"},{"display_name":"triclinic P-1","id":"triclinic-p-1","score":0.3602,"url":"https://openalex.org/keywords/triclinic-p-1"},{"display_name":"monoclinic C2/c","id":"monoclinic-c2-c","score":0.4107,"url":"https://openalex.org/keywords/monoclinic-c2-c"},{"display_name":"SiO4 tetrahedra","id":"sio4-tetrahedra","score":0.4484,"url":"https://openalex.org/keywords/sio4-tetrahedra"},{"display_name":"monoclinic C2/m","id":"monoclinic-c2-m","score":0.3912,"url":"https://openalex.org/keywords/monoclinic-c2-m"},{"display_name":"crystallographic data","id":"crystallographic-data","score":0.2012,"url":"https://openalex.org/keywords/crystallographic-data"},{"display_name":"corner-sharing tetrahedra","id":"corner-sharing-tetrahedra","score":0.5821,"url":"https://openalex.org/keywords/corner-sharing-tetrahedra"},{"display_name":"corner-sharing octahedra","id":"corner-sharing-octahedra","score":0.3548,"url":"https://openalex.org/keywords/corner-sharing-octahedra"},{"display_name":"triclinic P1","id":"triclinic-p1","score":0.2609,"url":"https://openalex.org/keywords/triclinic-p1"},{"display_name":"chalcogenides","id":"chalcogenides","score":0.2567,"url":"https://openalex.org/keywords/chalcogenides"},{"display_name":"ternary oxides","id":"ternary-oxides","score":0.2839,"url":"https://openalex.org/keywords/ternary-oxides"},{"display_name":"trigonal R-3m space group","id":"r-3m-space-group","score":0.3312,"url":"https://openalex.org/keywords/r-3m-space-group"},{"display_name":"noncentrosymmetric crystals","id":"noncentrosymmetric-crystals","score":0.226,"url":"https://openalex.org/keywords/noncentrosymmetric-crystals"},{"display_name":"ternary sulfides","id":"ternary-sulfides","score":0.5455,"url":"https://openalex.org/keywords/ternary-sulfides"},{"display_name":"rare earth sulfides","id":"rare-earth-sulfides","score":0.5243,"url":"https://openalex.org/keywords/rare-earth-sulfides"},{"display_name":"trigonal planar coordination","id":"trigonal-planar-geometry","score":0.321,"url":"https://openalex.org/keywords/trigonal-planar-geometry"}],"legacy_keywords":["Nonlinear Optical Materials","Crystallographic Computing","Deep-Ultraviolet Materials","Second Harmonic Generation","Inorganic Crystal Structures","Chalcogenide Clusters","Bond Valence Model","Fluorooxoborates","Metal Chalcogenides","Crystal Growth"],"openalex_id":"https://openalex.org/T10939","source_created_date":"2024-01-23T15:27:08","source_updated_date":"2026-10-17T03:02:00","subfield_id":"2504","url":"/topics/T10939","works_api_url":"https://api.openalex.org/works?filter=topics.id:T10939","works_count":128547,"label":"Crystal Structures and Properties","provider":"openalex","revision":"c1cc465a6cfff438","taxonomy_revision":"f050b5d4780b1289","title":"Crystal Structures and Properties","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"36240473484615835","address_version":"morton4x16-v1","coordinates":[3,25,2504,10939],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}