{"id":"https://openalex.org/T12875","display_name":"Thermal Expansion and Ionic Conductivity","description":"This cluster of papers focuses on the phenomenon of negative thermal expansion in various materials, including perovskites, framework compounds, and antiperovskite compounds. It explores the mechanisms, controllability, and technological applications of negative thermal expansion, as well as its correlation with superconductivity and magnetic properties. Additionally, it discusses the development of sodium-beta alumina batteries and the associated challenges and perspectives.","keywords":[{"id":"https://openalex.org/keywords/negative-thermal-expansion","display_name":"negative thermal expansion","score":0.5336},{"id":"https://openalex.org/keywords/beta-alumina","display_name":"beta-alumina","score":0.5629},{"id":"https://openalex.org/keywords/anisotropic-thermal-expansion","display_name":"anisotropic thermal expansion","score":0.2302},{"id":"https://openalex.org/keywords/sodium-beta-alumina","display_name":"sodium beta-alumina","score":0.7208},{"id":"https://openalex.org/keywords/zrw2o8","display_name":"ZrW2O8","score":0.4805},{"id":"https://openalex.org/keywords/zero-thermal-expansion","display_name":"zero thermal expansion","score":0.5068},{"id":"https://openalex.org/keywords/thermal-expansion-anomaly","display_name":"anomalous thermal expansion","score":0.2604},{"id":"https://openalex.org/keywords/low-temperature-thermal-expansion","display_name":"low-temperature expansion","score":0.2246},{"id":"https://openalex.org/keywords/antiperovskite","display_name":"antiperovskite","score":0.2585},{"id":"https://openalex.org/keywords/lattice-thermal-expansion","display_name":"lattice thermal expansion","score":0.2693},{"id":"https://openalex.org/keywords/near-zero-thermal-expansion","display_name":"near-zero thermal expansion","score":0.5704},{"id":"https://openalex.org/keywords/positive-thermal-expansion","display_name":"positive thermal expansion","score":0.5392},{"id":"https://openalex.org/keywords/rigid-unit-modes","display_name":"rigid unit modes","score":0.3627},{"id":"https://openalex.org/keywords/isotropic-thermal-expansion","display_name":"isotropic thermal expansion","score":0.6776},{"id":"https://openalex.org/keywords/negative-thermal-expansion-coefficient","display_name":"negative thermal expansion coefficient","score":0.2459},{"id":"https://openalex.org/keywords/na-beta-alumina","display_name":"Na-\u03b2''-alumina","score":0.5458},{"id":"https://openalex.org/keywords/beta-alumina-electrolyte","display_name":"beta-alumina electrolyte","score":0.4557},{"id":"https://openalex.org/keywords/conduction-planes","display_name":"conduction planes","score":0.6282},{"id":"https://openalex.org/keywords/thermal-expansion-control","display_name":"thermal expansion control","score":0.3065},{"id":"https://openalex.org/keywords/scf3","display_name":"ScF3","score":0.4053},{"id":"https://openalex.org/keywords/zirconium-tungsten-oxide","display_name":"zirconium tungsten oxide","score":0.4351},{"id":"https://openalex.org/keywords/sodium-sulfur-cells","display_name":"sodium-sulfur cells","score":0.3849},{"id":"https://openalex.org/keywords/spinel-block","display_name":"spinel block","score":0.4518},{"id":"https://openalex.org/keywords/zrv2o7","display_name":"ZrV2O7","score":0.3888},{"id":"https://openalex.org/keywords/low-thermal-expansion-ceramics","display_name":"low thermal expansion ceramics","score":0.4769}],"legacy_keywords":"Negative Thermal Expansion; Materials; Perovskite; Framework; Superconductivity; Magnetic Nanocrystals; Lattice Dynamics; Antiperovskite Compounds; Anomalous Physical Properties; Sodium-Beta Alumina Batteries","ids":{"openalex":"https://openalex.org/T12875","wikipedia":"https://en.wikipedia.org/wiki/Negative_thermal_expansion"},"subfield":{"id":"https://openalex.org/subfields/2505","display_name":"Materials Chemistry"},"field":{"id":"https://openalex.org/fields/25","display_name":"Materials Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"},"siblings":[{"id":"https://openalex.org/T10074","display_name":"Carbon Nanotubes in 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Synthesis And Properties"},{"id":"https://openalex.org/T10440","display_name":"Advanced Thermoelectric Materials and Devices"},{"id":"https://openalex.org/T10474","display_name":"Material Dynamics and Properties"},{"id":"https://openalex.org/T10478","display_name":"Diamond and Carbon-based Materials Research"},{"id":"https://openalex.org/T10511","display_name":"High voltage insulation and dielectric phenomena"},{"id":"https://openalex.org/T10592","display_name":"Fusion materials and technologies"},{"id":"https://openalex.org/T10735","display_name":"Mesoporous Materials and Catalysis"},{"id":"https://openalex.org/T10811","display_name":"Hydrogen Storage and Materials"},{"id":"https://openalex.org/T10865","display_name":"Shape Memory Alloy Transformations"},{"id":"https://openalex.org/T10903","display_name":"Porphyrin and Phthalocyanine Chemistry"},{"id":"https://openalex.org/T10922","display_name":"Magnetic Properties and Synthesis of Ferrites"},{"id":"https://openalex.org/T11087","display_name":"Solidification and crystal growth phenomena"},{"id":"https://openalex.org/T11162","display_name":"Enzyme Structure and Function"},{"id":"https://openalex.org/T11169","display_name":"Silicon Nanostructures and Photoluminescence"},{"id":"https://openalex.org/T11240","display_name":"Luminescence and Fluorescent Materials"},{"id":"https://openalex.org/T11242","display_name":"Nuclear Materials and Properties"},{"id":"https://openalex.org/T11277","display_name":"Thermal properties of materials"},{"id":"https://openalex.org/T11279","display_name":"Lanthanide and Transition Metal Complexes"},{"id":"https://openalex.org/T11286","display_name":"Polyoxometalates: Synthesis and Applications"},{"id":"https://openalex.org/T11315","display_name":"Phase-change materials and chalcogenides"},{"id":"https://openalex.org/T11341","display_name":"Boron and Carbon Nanomaterials Research"},{"id":"https://openalex.org/T11342","display_name":"Carbon and Quantum Dots Applications"},{"id":"https://openalex.org/T11442","display_name":"Titanium Alloys Microstructure and Properties"},{"id":"https://openalex.org/T11471","display_name":"Block Copolymer Self-Assembly"},{"id":"https://openalex.org/T11646","display_name":"Nonlocal and gradient elasticity in micro/nano structures"},{"id":"https://openalex.org/T11699","display_name":"High-Velocity Impact and Material Behavior"},{"id":"https://openalex.org/T11708","display_name":"Photochromic and Fluorescence Chemistry"},{"id":"https://openalex.org/T11842","display_name":"Ultrasound and Cavitation Phenomena"},{"id":"https://openalex.org/T11878","display_name":"Solid-state spectroscopy and crystallography"},{"id":"https://openalex.org/T11881","display_name":"Crystallization and Solubility Studies"},{"id":"https://openalex.org/T11887","display_name":"Quasicrystal Structures and Properties"},{"id":"https://openalex.org/T11907","display_name":"Copper-based nanomaterials and 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Analysis"},{"id":"https://openalex.org/T12420","display_name":"Silicone and Siloxane Chemistry"},{"id":"https://openalex.org/T12427","display_name":"Metal Alloys Wear and Properties"},{"id":"https://openalex.org/T12506","display_name":"Nuclear materials and radiation effects"},{"id":"https://openalex.org/T12588","display_name":"Electronic and Structural Properties of Oxides"},{"id":"https://openalex.org/T12613","display_name":"X-ray Diffraction in Crystallography"},{"id":"https://openalex.org/T12938","display_name":"Material Selection and Properties"},{"id":"https://openalex.org/T13039","display_name":"Magnesium Oxide Properties and Applications"},{"id":"https://openalex.org/T13104","display_name":"Chemical and Physical Properties of Materials"},{"id":"https://openalex.org/T13159","display_name":"Structural mechanics and materials"},{"id":"https://openalex.org/T13249","display_name":"Dielectric properties of ceramics"},{"id":"https://openalex.org/T13463","display_name":"Nanoporous metals and alloys"},{"id":"https://openalex.org/T13465","display_name":"Graphite, nuclear technology, radiation studies"},{"id":"https://openalex.org/T13889","display_name":"Advanced Materials and Semiconductor Technologies"},{"id":"https://openalex.org/T14076","display_name":"Material Properties and Failure Mechanisms"},{"id":"https://openalex.org/T14184","display_name":"Metallurgy and Material Science"}],"works_count":19612,"cited_by_count":254011,"works_api_url":"https://api.openalex.org/works?filter=topics.id:T12875","updated_date":"2026-10-20T03:01:21","created_date":"2024-01-23T15:27:16"}