Title

Effect Of H20 On Dielectric Properties Of Berlinite: I. Dielectric Constant

Abstract

The dielectric constants of a series of hydrothermally grown berlinite crystals containing increasing amounts of H2O were determined using a two4erminal method and empirically determined edge corrections with ranging from 4.67 to 4.86 and KT33 from 4.54 to 4.76. The extrapolated values for ‘dry’ berlinite are kS11 = kS33 = 4.55. Infrared studies of these crystals show bands at 4400 and 5200 cm'1 which are attributed respectively to hydroxyl ions and macroscopic and microscopic inclusions of the 6-7 M HCI/H3PO4 growth medium. The hydroxyl ions are believed to result from terminal P—OH groups at the surfaces of inclusions or as (4H)AJ or (3H)ai hydroxyl nests. The OH− groups have a negligible Influence on the dielectric constant, whereas the Inclusions are responsible for the increase in and to 4.8 over the dry value of 4.55. © 1993 IOP Publishing Ltd.

Publication Date

1-14-1993

Publication Title

Journal of Physics D: Applied Physics

Volume

26

Issue

1

Number of Pages

93-100

Document Type

Article

Identifier

scopus

Personal Identifier

scopus

DOI Link

https://doi.org/10.1088/0022-3727/26/1/015

Socpus ID

0027206387 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0027206387

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