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991. Ferroics: Magnetic-Compass Lattice and Optical Phonon Dispersions of Dipolar Crystals
Topic: Ceramics
Published: Date unknown
Authors: Takeshi Nishimatsu, U Waghmare, Yoshiyuki Kawazoe, Benjamin P Burton, Kazutaka Nagao, N. Saito
Abstract: We report a simple safe and attractive pedagogic demonstration with magnetic compasses that facilitates an intuitive understanding of the concept that ferromagnetism and ferroelectricity do not result from dipole-dipole interactions alone. Phonon di ...

992. First-Principles Effective Hamiltonians for PbZrO^d3^
Topic: Ceramics
Published: Date unknown
Author: Eric J Cockayne
Abstract: The phase transformation behavior and physical properties of the technologically important PbZr^d1-x^Ti^dx^O^d3^ (PZT) solid solution series are of great interest. For example, the large piezoelectric response of PZT (x = 0.45) makes this compound su ...

993. Flux-Pinning of Bi^d2^Sr^d2^CaCu^d2^O^d8^ High T^dc^ Superconducting Tapes Utilizing (Sr,Ca)^d14^Cu^d24^O^d41^ and Sr^d2^CaAl^d2^O^d6^ Defects
Topic: Ceramics
Published: Date unknown
Authors: T J Haugan, Winnie K Wong-Ng, Lawrence P. Cook, L Swartzendruber, H J Brown, D T Shaw
Abstract: Efforts to improve the magnetic flux-pinning properties of Bi^d2^Sr^d2^Ca^d1^Cu^d2^0^d8 +{delta} /Ag (2212/Ag) tape conductors utilizing (Sr^d1-x^Ca^dx^)14Cu^d24^0^d41+{delta} (014x24) and Sr^d2^CaA1^d2^0^d6^ (03A1^d2^) defects are described. Precu ...

994. Fractographic Analysis of Ceramic Materials Tested Using the Diametral Compression Test
Topic: Ceramics
Published: Date unknown
Authors: J Swab, George David Quinn
Abstract: The diametral compression (or Brazilian disk) test is a useful method for determining the tensile strength of ceramic materials. This test method has been utilized periodically over the past fifty years. The state of stress has been confirmed by th ...

995. Glass forming liquids and polymers: what we learn from statistical physics
Topic: Ceramics
Published: Date unknown
Authors: S C Glotzer, Y Gebremichael, N Lacevic, T B Schroder, Francis W. ~undefined~undefined~undefined~undefined~undefined Starr
Abstract: We describe the application of statistical mechanical framework, originally developed to describe critical phenonema, to the problem of dynamic criticality associated with the glass transition of various materials.

996. Glass-Infiltrated Alumina and Spinel Ceramic Composites: Residual Stresses and Mechanical Behavior
Topic: Ceramics
Published: Date unknown
Authors: A Saigal, Lin-Sien H Lum, S Jahanmir
Abstract: All-ceramic crowns, including glass-infiltrated alumina and spinel composites, are coming into widespread use because of their superior aesthetics and chemical inertness. This study investigates the residual stresses that are developed in these comp ...

997. Gravitational Effects on Mercuric Iodide Crystal Growth
Topic: Ceramics
Published: Date unknown
Authors: B W Steiner, L van den Berg, U Laor
Abstract: Gravity can affect the physical vapor growth of mercuric iodide in two distinct ways. First, gravity will induce convection during growth, which strongly mixes residual impurities and any elementary gases resulting from imperfect stoichiometry, eith ...

998. Green Body Density Measurement Techniques
Topic: Ceramics
Published: Date unknown
Authors: P Pei, J Anderson, M C Bhardwaj, Dennis Brooke Minor, T Thornton
Abstract: Green body density measurement techniques were investigated and compared. The measurement techniques investigated include mass-volume measurement, mercury pycnometry, powderdisplacement pycnometry, and noncontact ultrasonic method. Samples studied ...

999. Habits of Grains in Dense Polycrystalline Solids
Topic: Ceramics
Published: Date unknown
Authors: D M. Saylor, B S El-Dasher, Y Pang, H M Miller, P Wynblatt, Anthony D Rollett, G S Rohrer
Abstract: Three-dimensional interfacial networks in polycrystalline solids are topologically and crystallographically complex. With a few notable exceptions, most of what we know about the distribution of three-dimensional grain shapes has been derived from fo ...

1000. Hierarchical Roughness Makes Superhydrophobic States Stable
Topic: Ceramics
Published: Date unknown
Authors: Michael Nosonovsky, Bharat Bhushan
Abstract: Roughness enhances hydrophobicity of a solid surface leading to high contact angles with water. To achieve low contact angle hysteresis along with a high contact angle, superhydrophobic surfaces should form composite interface (CI) with air pockets i ...

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