Related Experiment Video
Updated: Jun 11, 2026

In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx
Published on: May 13, 2020
Bipolar resistive switching in amorphous calcium zirconate memristors
Vithaldas Raja1, Simran Nehra2, Anjana Dogra2
1Department of Physics, School of Advanced Sciences, Vellore Institute of Technology, Vellore, TN, India.
Abstract:
We report the bipolar resistive switching characteristics of a simple two-terminal memristor based on an amorphous calcium zirconate (a-CaZrO3) thin film. The device, in a Au/a-CaZrO3/FTO configuration, demonstrated reliable and reproducible switching at low operating voltages (± 1 V). The memristor exhibits stable performance metrics, including a reliable endurance over [Formula: see text] cycles, stable data retention for over [Formula: see text] s, and reliable cycle-to-cycle and device-to-device uniformity. Analysis of the current-voltage characteristics suggests a switching mechanism governed by the formation and rupture of oxygen vacancy-based conductive filaments, a model strongly supported by X-ray photoelectron spectroscopy. These findings highlight amorphous CaZrO3 as a promising material for memristor based Boolean logic circuits and data encryption.
Related Concept Videos
MOS Capacitor
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
Bipolar Junction Transistor
The structure...
MOSFET: Enhancement Mode
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no current...
Switching of BJT
Cut-off Mode ("Off" State): In this state, both the emitter-base and collector-base junctions are reverse-biased. The...
MOSFET
In an n-MOSFET, the structure includes n-type source and drain...
Characteristics of MOSFET
Various vital parameters influence their functionality, which is crucial for theory and electronics applications. First, channel dimensions, precisely length, and width, are pivotal. The size of these channels affects the transistor's ability to carry current and switching speeds; shorter channels typically enable quicker...

