Forming-free resistive switching in ferroelectric Bi 0.97 Y 0.03 Fe 0.95 Sc 0.05 O 3 film for RRAM application

Jena, A K and Mohanty, Himadri Nandan and Mohanty, Jyoti Ranjan (2021) Forming-free resistive switching in ferroelectric Bi 0.97 Y 0.03 Fe 0.95 Sc 0.05 O 3 film for RRAM application. Physica Scripta, 96 (4). ISSN 0031-8949

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Abstract

Electromechanical and resistive switching properties were investigated in ferroelectric rhombohedral Bi0.97Y0.03Fe0.95Sc0.05O3(BYFSO) film, grown on fluorine-doped tin oxide coated glass substrate. Piezoforce microscopy images of the BYFSO film after the electrical writing indicates the ferroelectric domains were switched completely towards the upward and downward direction at ± 8 V DC bias voltage, which is analogous to the ferroelectric hysteresis curve. The resistive switching effect was investigated on the Ag/BYFSO/FTO RRAM device configuration through conventional I â' V characteristics. The charge transport process in Ag/BYFSO/FTO resistive device is transformed from Ohmic to space charge limited current conduction mechanism. The endurance characteristics ensure a stable bipolar resistive switching effect with a large memory window of OFF/ON ratio abouta100 for 50 repeatable testing cycles. From the impedance spectroscopy analysis, it is observed that the bulk resistance plays a significant role during the SET-RESET process, by large degradation of resistance from megaohm (high resistance state) to kiloohm (low resistance state). The oxygen vacancy induced conductive filaments are responsible for achieving the various resistive states in the device. © 2021 Institute of Physics Publishing. All rights reserved.

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IITH Creators:

IITH Creators	ORCiD
Mohanty, Jyoti Ranjan	https://orcid.org/0000-0001-9579-754X

Item Type:

Article

Additional Information:

A. K. Jena acknowledges to IIT Hyderabad providing research facility and Council of Scientific and Industrial Research (CSIR) for providing financial support. Authors acknowledge Park System for CP-AFM measurements.

Uncontrolled Keywords:

Dielectric; Ferroelectric; Leakage current; Piezoelectric; Resistive switching

Subjects:

Physics

Divisions:

Department of Physics

Depositing User:

. LibTrainee 2021

Date Deposited:

23 Aug 2022 12:05

Last Modified:

23 Aug 2022 12:05