Ultrasonic propagation velocity in KTaO3
نویسندگان
چکیده
منابع مشابه
Ultrasonic Propagation Behaviour in Composite Material for Velocity Measurements of Concrete Structure
Guarantee of the strength for an aging structure, especially for a concrete structure, has been required. Possibility of the evaluation of a concrete structure using ultrasonic velocity has been investigated in civil engineering field in Japan. However, because the concrete is the complicate composite material which contains aggregates in mortar, and the ultrasonic propagation becomes complicat...
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Hydraulic cements develop mechanical strength and low permeability as a result of hydration, which involves chemical reactions between water and the anhydrous compounds present in the cement. Solid hydration products form both at the surfaces of the cement particles and in the pore space by nucleation and aggregation. As a result, the solid phase becomes highly connected and the material transf...
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Surface heterogeneity in Ar ion bombarded samples of (001) oriented KTaO3 was studied using (in-situ) electron microscopy and atomic force microscopy. Ion bombardment results in surface damage as well as in offstoichiometry of K and Ta due to the large differences in atomic radii of the two constituent elements and hence different dry etching rates. Subsequent annealing of such samples reduces ...
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ژورنال
عنوان ژورنال: Physics Letters A
سال: 1968
ISSN: 0375-9601
DOI: 10.1016/0375-9601(68)90609-9