Matches in SemOpenAlex for { <https://semopenalex.org/work/W2563676504> ?p ?o ?g. }
Showing items 1 to 75 of
75
with 100 items per page.
- W2563676504 abstract "Two Positive Temperature Coefficient of Resistivity (PTCR) ceramics with composition A, (Ba0.997Sb0.003)Ti1.005O3, and composition B, (Ba0.997Sb0.003)Ti1.005O3 + 0.1 mole% MnO2 were fabricated and examined herein. The ceramic grain size, oxygen pressure and annealing time need to be simultaneously controlled to obtain an optimum PTCR resistor. Additionally, the stoichiometric proportions of the constituent elements must be weighted carefully in order to produce good quality PTCR devices. This study thoroughly explores all the factors affecting the PTCR characteristics. Experiments were developed to verify that PTCR phenomena are strongly influenced by oxygen absorption. As the samples were annealed in Air atmosphere, the numbers of foreign ions compensation were increased by this oxidation process. The Schottky barrier is formed between grains and grain boundaries, improving the PTCR effect and resulting in very steep gradient Resistivity-Temperature (R-T) plots. Annealing samples in oxygen atmosphere also improves the PTCR effect and reduces the annealing time dramatically, but increases the room-temperature resistivity. By contrast, annealing in reduced air (98% N2 + 2% H2) atmosphere decreases the resistivity of the ceramics, and also diminishes the PTCR effect of the ceramics. The complex-plane-impedance method was used to analyze the influence of annealing condition (temperature, time and atmosphere) on the PTCR devices. Our study inferred that PTCR mechanism originated from the grain boundaries rather than the bulk. Annealing at 1200°C was found to control the PTCR characteristics of the ceramics more effectively than the traditional cooling rate control process. The annealing processing technology and theoretical mechanism affecting the PTCR ceramics were designed and discussed in detail. Factors influencing the PTCR phenomena were studied, showing that the design of the PTCR devices is practical." @default.
- W2563676504 created "2017-01-06" @default.
- W2563676504 creator A5034457006 @default.
- W2563676504 date "2007-08-15" @default.
- W2563676504 modified "2023-10-06" @default.
- W2563676504 title "ANNEALING EFFECTS OF SEMICONDUCTING BARIUM-TITANATE THERMISTER" @default.
- W2563676504 doi "https://doi.org/10.51400/2709-6998.2047" @default.
- W2563676504 hasPublicationYear "2007" @default.
- W2563676504 type Work @default.
- W2563676504 sameAs 2563676504 @default.
- W2563676504 citedByCount "4" @default.
- W2563676504 countsByYear W25636765042012 @default.
- W2563676504 countsByYear W25636765042015 @default.
- W2563676504 countsByYear W25636765042017 @default.
- W2563676504 countsByYear W25636765042021 @default.
- W2563676504 crossrefType "journal-article" @default.
- W2563676504 hasAuthorship W2563676504A5034457006 @default.
- W2563676504 hasBestOaLocation W25636765041 @default.
- W2563676504 hasConcept C113196181 @default.
- W2563676504 hasConcept C119599485 @default.
- W2563676504 hasConcept C127413603 @default.
- W2563676504 hasConcept C134132462 @default.
- W2563676504 hasConcept C159985019 @default.
- W2563676504 hasConcept C16643434 @default.
- W2563676504 hasConcept C171250308 @default.
- W2563676504 hasConcept C185592680 @default.
- W2563676504 hasConcept C19067145 @default.
- W2563676504 hasConcept C192191005 @default.
- W2563676504 hasConcept C192562407 @default.
- W2563676504 hasConcept C199289684 @default.
- W2563676504 hasConcept C2777855556 @default.
- W2563676504 hasConcept C2779159579 @default.
- W2563676504 hasConcept C2781063764 @default.
- W2563676504 hasConcept C43617362 @default.
- W2563676504 hasConcept C47908070 @default.
- W2563676504 hasConcept C69990965 @default.
- W2563676504 hasConcept C87976508 @default.
- W2563676504 hasConceptScore W2563676504C113196181 @default.
- W2563676504 hasConceptScore W2563676504C119599485 @default.
- W2563676504 hasConceptScore W2563676504C127413603 @default.
- W2563676504 hasConceptScore W2563676504C134132462 @default.
- W2563676504 hasConceptScore W2563676504C159985019 @default.
- W2563676504 hasConceptScore W2563676504C16643434 @default.
- W2563676504 hasConceptScore W2563676504C171250308 @default.
- W2563676504 hasConceptScore W2563676504C185592680 @default.
- W2563676504 hasConceptScore W2563676504C19067145 @default.
- W2563676504 hasConceptScore W2563676504C192191005 @default.
- W2563676504 hasConceptScore W2563676504C192562407 @default.
- W2563676504 hasConceptScore W2563676504C199289684 @default.
- W2563676504 hasConceptScore W2563676504C2777855556 @default.
- W2563676504 hasConceptScore W2563676504C2779159579 @default.
- W2563676504 hasConceptScore W2563676504C2781063764 @default.
- W2563676504 hasConceptScore W2563676504C43617362 @default.
- W2563676504 hasConceptScore W2563676504C47908070 @default.
- W2563676504 hasConceptScore W2563676504C69990965 @default.
- W2563676504 hasConceptScore W2563676504C87976508 @default.
- W2563676504 hasIssue "4" @default.
- W2563676504 hasLocation W25636765041 @default.
- W2563676504 hasOpenAccess W2563676504 @default.
- W2563676504 hasPrimaryLocation W25636765041 @default.
- W2563676504 hasRelatedWork W1904091996 @default.
- W2563676504 hasRelatedWork W2005060265 @default.
- W2563676504 hasRelatedWork W2012174341 @default.
- W2563676504 hasRelatedWork W2074061134 @default.
- W2563676504 hasRelatedWork W2206276033 @default.
- W2563676504 hasRelatedWork W2216568262 @default.
- W2563676504 hasRelatedWork W2416276713 @default.
- W2563676504 hasRelatedWork W2924074504 @default.
- W2563676504 hasRelatedWork W3143719376 @default.
- W2563676504 hasRelatedWork W92499151 @default.
- W2563676504 hasVolume "15" @default.
- W2563676504 isParatext "false" @default.
- W2563676504 isRetracted "false" @default.
- W2563676504 magId "2563676504" @default.
- W2563676504 workType "article" @default.