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Mineral dielectric constants and the oxide additivity rule

Shannon, R. D. and Subramanian, M. A. and Mariano, A. N. and Rossman, G. R. (1989) Mineral dielectric constants and the oxide additivity rule. In: Materials for magneto-optic data storage. Materials Research Society symposia proceedings. No.150. Materials Research Society , Pittsburgh, PA, pp. 197-201. http://resolver.caltech.edu/CaltechAUTHORS:20130624-145715037

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Abstract

The 1 MBz dielectric constants of a variety of synthetic aluminate garnets: Y_3Al_5 O_(12), Ho_3Al_5 O_(12), Y_(2.93)Nd_(.07)Sc_2Al_3 O_(12) and Gd_(2.95)Nd_(.05)Sc_(1.98)Cr_(.02)Al_3 0_(12) and several silicates: CaB_2Si_2 O_8 (danburite), Ca_3Al_2Si_3 O_(12) (grossular) and Mg_2Al_4Si_5 O_(18) (cordierite) were determined using the two-terminal method with edge corrections. These data and polarizabilities derived from the published single crystal dielectric constants of simple oxides were used to compare compound polarizabilities obtained from the Clausius-Mosotti equation and the oxide additivity rule.


Item Type:Book Section
Additional Information:© 1989 Materials Research Society. © 1989 Materials Research Society. We thank R. W. Shiffer for sample preparation, R. A. Oswald for making the capacitance measurements, L. Harrison and K. Ewsuk for the TGA data and A. Brown (Studsvik Energiteknik AB) and C. Foris for Guinier data and refinement of the cell dimensions. We are particularly indebted to R. F. Belt (Airtron) for the Y_3Al_5 O_(12) crystal, T. Allik (Science Applications International, McLean, VA) for the Y_3Sc_2Al_ 3 O_(12) crystal, M. Kokta (Union Carbide, Washougal, WA) for the Gd_3Sc_2Al_3 O_(12) crystal and M. Randles (Allied Signal, Charlotte, NC) for the Ho_3Al_5 O_(12) and Y_(1 .5)Er_(1.5)Al_5 O_(12) crystals. This work was supported in part by National Science Foundation Grant EAR 86-18200.
Funders:
Funding AgencyGrant Number
NSF86-18200
Record Number:CaltechAUTHORS:20130624-145715037
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20130624-145715037
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:39060
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:24 Jun 2013 22:18
Last Modified:24 Jun 2013 22:18

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