نتایج جستجو برای: barium strontium titanate ba1

تعداد نتایج: 17160  

Journal: :Chemosphere 2005
Christine M Davidson Mark D Gibson Elaine Hamilton Brian H MacGillivray John Reglinski Elixabete Rezabal

The concentrations of strontium and barium have been measured in water, sediment and the shells of mussels (Mytilus edulis) from a river system in the Sunart region of Scotland, UK. The aim was to establish the fate and mobility of these elements, which are slowly being released from old mine workings on the Strontian granites. Enhanced strontium (1500-2000 microg l(-1) and 250-290 microg l(-1)...

Journal: :Physical review letters 2013
Marianne C Tarun Farida A Selim Matthew D McCluskey

Persistent photoconductivity was observed in strontium titanate (SrTiO(3)) single crystals. When exposed to sub-bandgap light (2.9 eV or higher) at room temperature, the free-electron concentration increases by over 2 orders of magnitude. After the light is turned off, the enhanced conductivity persists for several days, with negligible decay. From positron lifetime measurements, the persistent...

Journal: :Physical Review Letters 2007

Journal: :Bulletin of Materials Science 2008

Journal: :Journal of Applied Physics 1972

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