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You searched on: Topic Area: Condensed Matter Physics

Displaying records 31 to 33.
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31. Temperature-Dependent Behavior of PbSc^d1/2^Nb^d1/2^O^d3^ From First Principles
Topic: Condensed Matter Physics
Published: 7/1/2001
Authors: Eric J Cockayne, Benjamin P Burton, L Bellaiche
Abstract: We study the ferroelectric phase transition in PbSc1/2Nb1/2O3 (PSN) using a first-principles effective Hamiltonian approach. Results for PSN with NaCl-type ordering of Sc and Nb on the B sites shows that a Pb-centered effective Hamiltonian is approp ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=850498

32. Frequency Dependence of a Cryogenic Capacitor Measured Using Single Electron Tunneling Devices
Topic: Condensed Matter Physics
Published: 12/1/2000
Authors: Ali L Eichenberger, Mark W Keller, John M. Martinis, Neil M Zimmerman
Abstract: A new type of capacitance standrd based on counting electrons has been built. The operation of the standrd has already given very promising results for the determination of the value of a cryogenic vacuum-gap capacitor. The new capacitance standard o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=5874

33. Observations and modeling of normal-metal/insulator/superconductor refrigerator cooling from 300 mK to below 100 mK
Topic: Condensed Matter Physics
Published: Date unknown
Authors: Galen C O\'Neil, Peter J Lowell, Joel Nathan Ullom, Jason M Underwood
Abstract: In a refrigerator, heat is moved from one system to another and this movement requires an additional dissipated power. It is desirable to both isolate the cooled system, so that its temperature may differ from the bath, and to heatsink the heated sys ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909267



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