Feasibility of KTa(1-x)Nb(x)O3 as a dielectric or pyroelectric microcalorimeter

Details Feasibility of KTa(1-x)Nb(x)O3 as a dielectric or pyroelectric microcalorimeter Feasibility of KTa(1-x)Nb(x)O3 as a dielectric or pyroelectric microcalorimeter

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992spie.1743..380p&link_type=abstract

In: EUV, X-ray, and gamma-ray instrumentation for astronomy III; Proceedings of the Meeting, San Diego, CA, July 22-24, 1992 (A9

Astronomy and Astrophysics

Astronomy

Calorimeters, Dielectrics, Mixed Oxides, Potassium Oxides, Pyroelectricity, X Ray Spectroscopy, Alpha Particles, Electrical Properties, Light Emitting Diodes, Niobium Oxides, Permittivity, Polarization Characteristics, Radiation Counters, Tantalum Oxides, Thermodynamic Properties

Scientific paper

We are developing a dielectric microcalorimeter for X-ray spectroscopy. We will present the results of our measurement of the dielectric permittivity, the spontaneous polarization, and the pyroelectric coefficient of the mixed-crystal quantum ferroelectric KTa(1-x)Nb(x)O3 with a doping of x = 0.012, as a function of temperature and bias voltage across the device. The effects of surface layers on the permittivity and the pyroelectric coefficient are discussed. We also show the signal results from infrared LED and alpha-particle radiation.

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