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期刊论文
Ferroelectricity in Mn-implanted CdTe
APPLIED PHYSICS LETTERS VOLUME 83, NUMBER 11 15 SEPTEMBER 2003,-0001,():
CdTe:Mn was prepared by implantation of CdTe with 200keV Mn ions with a dose of 5 31016cm22, which produced an insulating layer in the surface region. Ferroelectric characterization of the implanted sample revealed a clear hysteresis in its polarization-voltage curves. The remnant polarization of CdTe: Mnamounts to 0.64mC/cm2 at 400Hz, and it decreases with increasing temperature in a continuous and diffusive manner. Capacitance measurement demonstrated a maximum capacitance at 140℃, and fitting of the data with Curie-Weiss law shows the occurrence of a second-order-type phase transition. The ferroelectricity is accounted for by the cation size difference in CdTe: Mn.
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