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in creator/contributor: "SIPOLA, DIANA L."  
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Chem-Prep PZT 95/5 for Neutron Generator Applications: Particle Size Distribution Comparison of Development and Production-Scale Powders

Description: The Materials Chemistry Department 1846 has developed a lab-scale chem-prep process for the synthesis of PNZT 95/5, a ferroelectric material that is used in neutron generator power supplies. This process (Sandia Process, or SP) has been successfully transferred to and scaled by Department 14192 (Ceramics and Glass Department), (Transferred Sandia Process, or TSP), to meet the future supply needs of Sandia for its neutron generator production responsibilities. In going from the development-size … more
Date: July 1, 2002
Creator: SIPOLA, DIANA L.; VOIGT, JAMES A.; LOCKWOOD, STEVEN J. & RODMAN-GONZALES, EMILY D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

X-Ray Powder Diffraction Study of Synthetic Palmierite, K{sub 2}Pb(SO{sub 4}){sub 2}

Description: Palmierite (K{sub 2}Pb(SO{sub 4}){sub 2}) has been prepared via a chemical synthesis method. Intensity differences were observed when X-ray powder data from the newly synthesized compound were compared to the published powder diffraction card (PDF) 29-1015 for Palmierite. Investigation of these differences indicated the possibility of preferred orientation and/or chemical inhomogeneity affecting intensities, particularly those of the basal (00{ell}) reflections. Annealing of the Palmierite was … more
Date: December 19, 2000
Creator: Tissot, Ralph G., Jr.; Rodriguez, Mark A.; Sipola, Diana L. & Voigt, James A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Pressure Induced Phase Transformation of Pb(Zr(0.95)Ti(0.05))O(3) Based Ceramics: Grain Size Dependence

Description: A substantial decrease in hydrostatic ferroelectric (FE) to antiferroelectric (AFE) transformation pressure was measured for Pb(Zr{sub 0.949}Ti{sub 0.051}){sub 0.989}Nb{sub 0.0182}O{sub 3} ceramics with decreasing grain size. The 150 MPa decrease in hydrostatic FE to AFE transformation pressure over the grain size range of 8.5 {micro}m to 0.7{micro}m was shown to be consistent with enhanced internal stress with decreasing grain size. Further, the Curie Point decreased and the dielectric constan… more
Date: December 21, 1999
Creator: Tuttle, Bruce A.; Voigt, James A.; Scofield, Timothy W.; Aselage, Terrence L.; Rodriguez, Mark A.; Yang, Pin et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The Impact of Solution Agglomeration on the Deposition of Self-Assembled Monolayers

Description: Self-assembled monolayers (SAMS) are commonly produced by immersing substrates in organic solutions containing trichlorosilane coupling agents. Unfortunately, such deposition solutions can also form alternate structures including inverse micelles and lamellar phases. The formation of alternate phases is one reason for the sensitivity of SAM depositions to factors such as the water content of the deposition solvent. If such phases are present, the performance of thin films used for applications … more
Date: April 17, 2000
Creator: Bunker, Bruce C.; Carpick, Robert W.; Assink, Roger A.; Thomas, Michael L.; Hankins, Matthew G.; Voigt, James A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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