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Correlative multimodal probing of ionically-mediated electromechanical phenomena in simple oxides.

Kim Y, Strelcov E, Hwang IR, Choi T, Park BH, Jesse S, Kalinin SV - Sci Rep (2013)

Bottom Line: The local interplay between the ionic and electronic transport in NiO is explored using correlative imaging by first-order reversal curve measurements in current-voltage and electrochemical strain microscopy.Electronic current and electromechanical response are observed in reversible and electroforming regime.These studies provide insight into local mechanisms of electroresistive phenomena in NiO and establish universal method to study interplay between the ionic and electronic transport and electrochemical transformations in mixed electronic-ionic conductors.

View Article: PubMed Central - PubMed

Affiliation: 1] The Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 [2] School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon 440-746, Republic of Korea.

ABSTRACT
The local interplay between the ionic and electronic transport in NiO is explored using correlative imaging by first-order reversal curve measurements in current-voltage and electrochemical strain microscopy. Electronic current and electromechanical response are observed in reversible and electroforming regime. These studies provide insight into local mechanisms of electroresistive phenomena in NiO and establish universal method to study interplay between the ionic and electronic transport and electrochemical transformations in mixed electronic-ionic conductors.

No MeSH data available.


Related in: MedlinePlus

Average FORC type (a) I-V and (b) ESM loops as a function of varying bias (c); (d) corresponding loop area averaged over 1600 spatial points.
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f2: Average FORC type (a) I-V and (b) ESM loops as a function of varying bias (c); (d) corresponding loop area averaged over 1600 spatial points.

Mentions: To explore these phenomena systematically, we implement the FORC I-V measurements in SPM spectroscopic imaging mode. Here, current collected from the bottom electrode is measured for the voltage profile shown in Figure 2(c). The area of the I-V hysteresis loop opening is probed as a function of the peak bias. For low biases, the I-V curves are non-hysteretic (or currents are below detection limit), whereas the onset of ionic transport is associated with a hysteresis loop opening (see Fig. 2(a)). Correspondingly, the hysteresis loop opening vs. peak bias provides insight into the bias-induced electrochemical phenomena.


Correlative multimodal probing of ionically-mediated electromechanical phenomena in simple oxides.

Kim Y, Strelcov E, Hwang IR, Choi T, Park BH, Jesse S, Kalinin SV - Sci Rep (2013)

Average FORC type (a) I-V and (b) ESM loops as a function of varying bias (c); (d) corresponding loop area averaged over 1600 spatial points.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3795354&req=5

f2: Average FORC type (a) I-V and (b) ESM loops as a function of varying bias (c); (d) corresponding loop area averaged over 1600 spatial points.
Mentions: To explore these phenomena systematically, we implement the FORC I-V measurements in SPM spectroscopic imaging mode. Here, current collected from the bottom electrode is measured for the voltage profile shown in Figure 2(c). The area of the I-V hysteresis loop opening is probed as a function of the peak bias. For low biases, the I-V curves are non-hysteretic (or currents are below detection limit), whereas the onset of ionic transport is associated with a hysteresis loop opening (see Fig. 2(a)). Correspondingly, the hysteresis loop opening vs. peak bias provides insight into the bias-induced electrochemical phenomena.

Bottom Line: The local interplay between the ionic and electronic transport in NiO is explored using correlative imaging by first-order reversal curve measurements in current-voltage and electrochemical strain microscopy.Electronic current and electromechanical response are observed in reversible and electroforming regime.These studies provide insight into local mechanisms of electroresistive phenomena in NiO and establish universal method to study interplay between the ionic and electronic transport and electrochemical transformations in mixed electronic-ionic conductors.

View Article: PubMed Central - PubMed

Affiliation: 1] The Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 [2] School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon 440-746, Republic of Korea.

ABSTRACT
The local interplay between the ionic and electronic transport in NiO is explored using correlative imaging by first-order reversal curve measurements in current-voltage and electrochemical strain microscopy. Electronic current and electromechanical response are observed in reversible and electroforming regime. These studies provide insight into local mechanisms of electroresistive phenomena in NiO and establish universal method to study interplay between the ionic and electronic transport and electrochemical transformations in mixed electronic-ionic conductors.

No MeSH data available.


Related in: MedlinePlus