TY - JOUR
T1 - Thermal wave induced edge electrical field of pyroelectric
T2 - Spatial pattern mapping and effect of ambient conditions
AU - Butenko, A. V.
AU - Sandomirsky, V.
AU - Chaniel, G.
AU - Shapiro, B.
AU - Schlesinger, Y.
AU - Jarov, A.
AU - Sablikov, V. A.
PY - 2010/8/15
Y1 - 2010/8/15
N2 - We have recently analyzed theoretically the main characteristics of the edge depolarizing electric field (EDEF), in the vicinity of a nonpolar face of a pyroelectric. In this work, we measured and characterized the EDEF, excited by a harmonical thermal wave. We present here experimental results obtained on a pyroelectric crystal LiTaO3, confirming our theoretical predictions. The interpretation assumes an equivalent circuit of a pyroelectric capacitive current source. The effect of the air pressure at the pyroelectric/air interface, on the EDEF, was determined in the interval 103 - 10 -5 torr. We found that EDEF increases significantly with decreasing air pressure, presumably due to diminishing of adsorption screening at the polar faces. Teflon plates, covering the polar faces, prevent accumulation of screening charged particles, resulting in a significant increase in EDEF. Our experimental results highlight the feasibility of EDEF application in micro- and nanotechnology as a contactless controlled electrical field.
AB - We have recently analyzed theoretically the main characteristics of the edge depolarizing electric field (EDEF), in the vicinity of a nonpolar face of a pyroelectric. In this work, we measured and characterized the EDEF, excited by a harmonical thermal wave. We present here experimental results obtained on a pyroelectric crystal LiTaO3, confirming our theoretical predictions. The interpretation assumes an equivalent circuit of a pyroelectric capacitive current source. The effect of the air pressure at the pyroelectric/air interface, on the EDEF, was determined in the interval 103 - 10 -5 torr. We found that EDEF increases significantly with decreasing air pressure, presumably due to diminishing of adsorption screening at the polar faces. Teflon plates, covering the polar faces, prevent accumulation of screening charged particles, resulting in a significant increase in EDEF. Our experimental results highlight the feasibility of EDEF application in micro- and nanotechnology as a contactless controlled electrical field.
UR - http://www.scopus.com/inward/record.url?scp=77956311513&partnerID=8YFLogxK
U2 - 10.1063/1.3474664
DO - 10.1063/1.3474664
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AN - SCOPUS:77956311513
SN - 0021-8979
VL - 108
JO - Journal of Applied Physics
JF - Journal of Applied Physics
IS - 4
M1 - 044106
ER -