Document Detail


Enhanced ionic conductivity in polycrystalline TiO2 by "one-dimensional doping"
MedLine Citation:
PMID:  24477488     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The influence of line defects (dislocations) on the electrical properties of polycrystalline TiO2 was investigated. Line defects were created in TiO2 during spark plasma sintering at 1000 °C and 400 MPa. TEM characterisation indicates dislocations to be preferably oriented on {110} and {101} planes. The measured electrical conductivity as a function of oxygen partial pressure and temperature revealed that the dislocations play a vital role in modifying the defect chemistry of TiO2. The presence of dislocations enhanced the ionic conductivity over a wide range of oxygen partial pressures. The observed changes can be interpreted in terms of negatively charged dislocation cores and adjacent space charge accumulation layers. The present findings point towards an alternative method to tune the electrical properties of ionic solids.
Authors:
Kiran Kumar Adepalli; Marion Kelsch; Rotraut Merkle; Joachim Maier
Related Documents :
18042768 - Glutamine improves myocardial function following ischemia-reperfusion injury.
2785768 - Renal ischemia and reperfusion impair endothelium-dependent vascular relaxation.
10636108 - Total warm ischemia and reperfusion impairs flow in all rat gut layers but increases le...
2102808 - Antioxidant protection against damage during cardiac ischemia and reperfusion: effect o...
6172668 - Long-term treatment of hypertension with methyldopa. viii. overview.
1946778 - New therapy for treating hypernasal speech using continuous positive airway pressure (c...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-1-29
Journal Detail:
Title:  Physical chemistry chemical physics : PCCP     Volume:  -     ISSN:  1463-9084     ISO Abbreviation:  Phys Chem Chem Phys     Publication Date:  2014 Jan 
Date Detail:
Created Date:  2014-1-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100888160     Medline TA:  Phys Chem Chem Phys     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Co-registration of intra-operative brain surface photographs and pre-operative MR images.
Next Document:  Cortisol levels and the severity and outcomes of acute stroke: a systematic review.