TY - JOUR
T1 - Improvement in electrical and dielectric behavior of thin films by Ag doping
AU - Srivastava, Anuranjan
AU - Kumar, D.
AU - Singh, Rajiv K.
AU - Venkataraman, Harish
AU - Eisenstadt, William R.
PY - 2000
Y1 - 2000
N2 - In this paper, we report the fabrication and characterization of (Formula presented) capacitors. All the films, including the top (silver) and bottom (Formula presented) electrodes, were deposited using a pulsed laser deposition technique. The electrical and dielectric properties of (Formula presented) capacitors were found to improve significantly by means of silver doping. For example, the leakage current density of a Ag/Ag-doped (Formula presented)capacitor was about an order of magnitude lower and the dielectric constant was ∼40% higher than that of a (Formula presented)capacitor over a range of biases. The improvement in the electrical properties of (Formula presented) films is believed to be caused by a double role of silver. The first one is associated with the reduced oxygen vacancies due to improved oxygenation of BST films in the presence of silver, and the second one is associated with the unpinning effect of domain walls again in the presence of silver.
AB - In this paper, we report the fabrication and characterization of (Formula presented) capacitors. All the films, including the top (silver) and bottom (Formula presented) electrodes, were deposited using a pulsed laser deposition technique. The electrical and dielectric properties of (Formula presented) capacitors were found to improve significantly by means of silver doping. For example, the leakage current density of a Ag/Ag-doped (Formula presented)capacitor was about an order of magnitude lower and the dielectric constant was ∼40% higher than that of a (Formula presented)capacitor over a range of biases. The improvement in the electrical properties of (Formula presented) films is believed to be caused by a double role of silver. The first one is associated with the reduced oxygen vacancies due to improved oxygenation of BST films in the presence of silver, and the second one is associated with the unpinning effect of domain walls again in the presence of silver.
UR - http://www.scopus.com/inward/record.url?scp=0010244314&partnerID=8YFLogxK
U2 - 10.1103/physrevb.61.7305
DO - 10.1103/physrevb.61.7305
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AN - SCOPUS:0010244314
SN - 1098-0121
VL - 61
SP - 7305
EP - 7307
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 11
ER -