Search results for "Metal colloids"

showing 2 items of 2 documents

Basic properties of the F-type centers in halides, oxides and perovskites

2010

We present a short survey of the optical properties of primary radiation-induced point defects in alkali halides, simple oxides and some ABO3 perovskites. We discuss in details the optical properties of single electron F and F + centers in rock-salt (f.c.c.) alkali halides and oxides and show that the Mollwo–Ivey law well-known for the F-type centers in alkali halides may be extended for other rock-salt structure insulators. We also discuss the major differences in point defect production mechanisms in halides and oxides. We show that the Rabin–Klick diagram may be generalized for a whole family of alkali halides. The F-type center migration and aggregation into metal colloids in alkali hal…

Nuclear and High Energy PhysicsColloidSingle electronChemistryInorganic chemistryHalidePhysical chemistryAlkali metalInstrumentationMetal colloidsCrystallographic defectNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
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Computer modeling of metal colloid formation in tracks of swift heavy ions in ionic solids

2001

Abstract We present results of computer modelling of the aggregation of primary radiation defects—F centers—in ionic crystals within tracks of swift heavy ions. We study how F-aggregate properties depend on the initial density of primary Frenkel defects in the track and its radius. The mean number of F centers in aggregates is typically very small, about five defects, which greatly complicates detection of expected metal colloids by ESR.

Nuclear and High Energy PhysicsRadiationChemistryDiffusionMineralogyIonic bondingRadiusRadiationCondensed Matter PhysicsMetal colloidsIonMetalColloidChemical physicsvisual_artvisual_art.visual_art_mediumGeneral Materials Science
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