Near-surface modification of defective KTaO3 by ionizing ion irradiation

Velisa, Gihan; Zarkadoula, Eva; Iancu, Decebal; Mihai, Maria Diana; Grygiel, Clara; Monnet, Isabelle; Kombaiah, Boopathy; Zhang, Yanwen; Weber, William J.

doi:10.1088/1361-6463/ac0b11

Title: Near-surface modification of defective KTaO₃ by ionizing ion irradiation

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Abstract

The synergistic effect of nuclear (S_n) and electronic (S_e) energy loss observed in some ABO₃ perovskites has attracted considerable attention due to the real possibility to modify various near-surface properties, such as the electronic and optical properties, by patterning ion tracks in the defective near-surface regions. In this study, we show that low-energy ion-induced disordering in conjunction with ionizing ion irradiation (18 MeV Si, 21 MeV Ni and 91.6 MeV Xe) is a promising approach for tailoring ion tracks in the near-surface of defective KTaO₃. Experimental characterization and computer simulations reveal that the size of these latent ion tracks increases with S_e and level of pre-existing damage. These results further reveal that the threshold S_e value (S_e^th) for track creation increases with decreasing pre-damage level. The values of S_e^th increase from 5.02 keV nm^-1, for a pre-existing fractional disorder of 0.53 in KTaO₃, to 10.81 keV nm^-1 for pristine KTaO₃. Above these thresholds, amorphous latent tracks are produced due local melting and rapid quenching. Below a disorder fraction of 0.08 and S_e ≤ 6.68 keV nm^-1, the synergistic effect is not active, and damage accumulation is suppressed due to a competing ionization-induced damage annealing process. These results indicate that, dependingmore »« less

Authors:

^[1];

^[2]; Iancu, Decebal ^[3]; Mihai, Maria Diana ^[4]; Grygiel, Clara ^[5]; Monnet, Isabelle ^[5];

^[4];

^[6];

^[7]

Horia Hulubei National Institute for Physics and Nuclear Engineering, Magurele (Romania); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division; Extreme Light Infrastructure, Nuclear Physics (ELI–NP), Magurele (Romania)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
Horia Hulubei National Institute for Physics and Nuclear Engineering, Magurele (Romania); Univ. of Bucharest, Magurele (Romania). Faculty of Physics
Horia Hulubei National Institute for Physics and Nuclear Engineering, Magurele (Romania)
Normandie Univ. Caen (France). Centre de Recherche sur les Ions, les Matériaux et la Photonique, CEA, CNRS, ENSICAEN, UNICAEN
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division; Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering
Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division

Publication Date:: Mon Jun 14 00:00:00 EDT 2021

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1820798

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Physics. D, Applied Physics

Additional Journal Information:: Journal Volume: 54; Journal Issue: 37; Journal ID: ISSN 0022-3727

Publisher:: IOP Publishing

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Velisa, Gihan, Zarkadoula, Eva, Iancu, Decebal, Mihai, Maria Diana, Grygiel, Clara, Monnet, Isabelle, Kombaiah, Boopathy, Zhang, Yanwen, and Weber, William J. Near-surface modification of defective KTaO3 by ionizing ion irradiation.  United States: N. p., 2021. 
Web.  doi:10.1088/1361-6463/ac0b11.

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                    Velisa, Gihan, Zarkadoula, Eva, Iancu, Decebal, Mihai, Maria Diana, Grygiel, Clara, Monnet, Isabelle, Kombaiah, Boopathy, Zhang, Yanwen, & Weber, William J. Near-surface modification of defective KTaO3 by ionizing ion irradiation.  United States.  https://doi.org/10.1088/1361-6463/ac0b11

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                    Velisa, Gihan, Zarkadoula, Eva, Iancu, Decebal, Mihai, Maria Diana, Grygiel, Clara, Monnet, Isabelle, Kombaiah, Boopathy, Zhang, Yanwen, and Weber, William J. Mon .  
"Near-surface modification of defective KTaO3 by ionizing ion irradiation".  United States.  https://doi.org/10.1088/1361-6463/ac0b11.  https://www.osti.gov/servlets/purl/1820798.

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@article{osti_1820798,

  title        = {Near-surface modification of defective KTaO3 by ionizing ion irradiation},

  author       = {Velisa, Gihan and Zarkadoula, Eva and Iancu, Decebal and Mihai, Maria Diana and Grygiel, Clara and Monnet, Isabelle and Kombaiah, Boopathy and Zhang, Yanwen and Weber, William J.},

  abstractNote = {The synergistic effect of nuclear (Sn) and electronic (Se) energy loss observed in some ABO3 perovskites has attracted considerable attention due to the real possibility to modify various near-surface properties, such as the electronic and optical properties, by patterning ion tracks in the defective near-surface regions. In this study, we show that low-energy ion-induced disordering in conjunction with ionizing ion irradiation (18 MeV Si, 21 MeV Ni and 91.6 MeV Xe) is a promising approach for tailoring ion tracks in the near-surface of defective KTaO3. Experimental characterization and computer simulations reveal that the size of these latent ion tracks increases with Se and level of pre-existing damage. These results further reveal that the threshold Se value (Seth) for track creation increases with decreasing pre-damage level. The values of Seth increase from 5.02 keV nm-1, for a pre-existing fractional disorder of 0.53 in KTaO3, to 10.81 keV nm-1 for pristine KTaO3. Above these thresholds, amorphous latent tracks are produced due local melting and rapid quenching. Below a disorder fraction of 0.08 and Se ≤ 6.68 keV nm-1, the synergistic effect is not active, and damage accumulation is suppressed due to a competing ionization-induced damage annealing process. These results indicate that, depending on Se and the amount of pre-existing damage, highly ionizing ions can either enhance or suppress damage accumulation in KTaO3, thus providing a pathway to tailoring defects states. Comprehending the conflicting roles of highly ionizing ions in defective ABO3 oxides is vital for understanding and predictive modeling of ion-solid interactions in complex oxides, as well as for achieving control over ion track size in the near-surface of defective KTaO3.},

  doi          = {10.1088/1361-6463/ac0b11},

  journal      = {Journal of Physics. D, Applied Physics},

  number       = 37,

  volume       = 54,

  place        = {United States},

  year         = {Mon Jun 14 00:00:00 EDT 2021},

  month        = {Mon Jun 14 00:00:00 EDT 2021}

}

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Title: Near-surface modification of defective KTaO3 by ionizing ion irradiation

Abstract

Citation Formats

Title: Near-surface modification of defective KTaO₃ by ionizing ion irradiation