Publikationen

2024

C. Kofahl, S. Ganschow, F. El Azzouzi, H. Fritze, H. Schmidt, Li-Diffusion in Lithium Niobate - Tantalate Solid Solutions, Solid State Ionics 409 (2024) 6116514, doi.org/10.1016/j.ssi.2024.116514

A. Pfannstiel, T. Hehemann, N. A. Schäfer, S. Sanna, Y. Suhak, L. Vittadello, F. Sauerwein, N. Dömer, J. Koelmann, H. Fritze, M. Imlau, Small Electron Polarons Bound to Interstitial Tantalum Defects in Lithium Tantalate, J. Phys.: Cond. Matter (2024), arxiv.org/abs/2402.14587

U. Bashir, D. Klimm, M. Rüsing, M. Bickermann, S.Ganschow, Evaluation and Thermodynamic Optimization of Phase Diagram of Lithium Niobate Tantalate Solid Solutions (2024), doi.org/10.48550/arXiv.2403.07527

F. Bernhardt, L. M. Verhoff, N. A. Schäfer, A. Kapp, C. Fink, W. Al Nachwati, U. Bashir, D. Klimm, F. El Azzouzi, U. Yakhnevych, Y. Suhak, H. Schmidt, K.-D. Becker, S. Ganschow, H. Fritze, S. Sanna; Ferroelectric to Paraelectric Structural Transition in LiTaO3 and LiNbO3 (2024), arxiv.org/abs/2403.17620

F. Bernhardt, F. A. Pfeiffer, F. Schug, A. Pfannstiel, T. Hehemann, S. Ganschow, M. Imlau, S. Sanna, Ground- and Excited-State Proprties of LiNb1-xTaxO3 Solid Solutions (2024), arxiv.org/abs/2403.17623

M. Röper, S. Seddon, Z. Amber, M. Rüsing, L. M. Eng, Depth Resolution in Piezoresponse Force Microscopy (2024), doi.org/10.48550/arXiv.2403.02797

L. Ding, E. Beyreuther, B. Koppitz, K. Kempf, J. Ren, W. Chen, M. Rüsing, Y. Zheng, L. Eng, Comparative Study of Photo-Induced Electronic Transport Along Ferroelectric Domain Walls in Lithium Niobate Single Crystals (2024), arxiv.org/abs/2402.17508

U. Yakhnevych, M. Kunzner, J. Ratenberger, H. Beccard, M. Rüsing, L. Eng, H. Fritze, High-temperature domain wall current in Mg-doped lithium niobate single crystals up to 400°C (2024), doi.org/10.48550/arXiv.2404.01214

L. Bollmers, T. Babai-Hemati, B. Koppitz, C. Eigner, L. Padberg, M. Rüsing, L. M. Eng, C. Silberhorn, Surface-Near Domain Engineering in Multi-Domain X-Cut Lithium Niobate Tantalate Mixed Crystals (2024), doi.org/10.48550/arXiv.2403.04590

U. Yakhnevych, V. Sargsyan, F. El Azzouzi, A. Kapp, F. Bernhardt, Y. Suhak, S. Ganschow, H. Schmidt, S. Sanna, H. Fritze, Charge Transport and Acoustic Loss in Li(Nb,Ta)O3 at Temperatures up to 900 °C (2024); doi.org/10.21268/20240311-1

C. Kofahl, J. Uhlendorf, B. A. Muscutt, M. N. Pionteck, S. Sanna, H. Fritze, S. Ganschow, H. Schmidt, Oxygen Diffusion in Li(Nb,Ta)O3 Single Crystals, Physica Status Solidi A (2024) 2300959, doi.org/10.1002/pssa.202300959

E. Tichy-Racs, S. Hurskyy, U. Yakhnevych, S. Ganschow, P. Gaczyński, K.-D. Becker, H. Fritze, Y. Suhak, Influence of Li-Stoichiometry on Electrical and Acoustic Properties and Temperature Stability of Li(Nb,Ta)O3 Solid Solutions up to 900 °C (2024), arxiv.org/abs/2403.06713

B. Koppitz, S. Ganschow, M. Rüsing, L. M. Eng, Ferroelectric Hysteresis Measurement in the LN-LT Single-Crystalline Family: Prospects for LNT, Physica Status Solidi A (2024) 2300967, doi.org/10.1002/pssa.202300967

F. El Azzouzi, D. Klimm, A. Kapp, L. M. Verhoff, N. A. Schäfer, S. Ganschow, K.-D. Becker, S. Sanna, H. Fritze, Phase Transformation in Lithium Niobate-Lithium Tantalate Solid Solutions (LiNb1-xTaxO3) (2024), doi.org/10.48550/arXiv.2403.16717

F. Bernhardt, S. Gharat, A. Kapp, F. Pfeiffer, R. Buschbeck, F. Hempel, O. Pashkin, S. C. Kehr, M. Rüsing, S. Sanna, L. M. Eng, Lattice Dynamics of LiNb1-xTaxO3 Solid Solutions: Theory and Experiment (2024); doi.org/10.48550/arXiv.2403.17594

M. N. Pionteck, S. Sanna, Photoelastic Properties of Stoichiometric Lithium Niobate from first-principles calculations, Physica Status Solidi A (2024) 2300970, doi.org/10.1002/pssa.202300970

P. Gaczyński, Y. Suhak, S. Ganschow, S. Sanna, H. Fritze, K.-D. Becker; High Temperature Optical Spectroscopy Study of the Fundamental Absorption Edge in LiNbO3-LiTaO3 Solid Solutions, Physica Status Solidi A (2024) 2300972; doi.org/10.1002/pssa.202300972

U. Yakhnevych, F. El Azzouzi, F. Bernhardt, C. Kofahl, Y. Suhak, S. Sanna, K. D. Becker, H. Schmidt, S. Ganschow, H. Fritze, Oxygen Partial Pressure and Temperature Dependent Electrical Conductivity of Lithium Niobate Tantalate Solid Solutions, Solid State Ionics 407 (2024) 116487, doi.org/10.1016/j.ssi.2024.116487

F. Hempel, F. Vernuccio, L. König, R. Buschbeck, M. Rüsing, G. Cerullo, D. Polli, L. M. Eng, Comparing Transmission- and Epi-BCARS: a Round Robin on Solid-State Materials, Applied Optics 63 (2024) 112-121, doi.org/10.1364/AO.505374

M. Zahn, E. Beyreuther, I. Kiseleva, A. S. Lofty, C. J. McCluskey, J. R. Maguire, A. Suna, M. Rüsing, J. M. Gregg, L. M. Eng, Equivalent-Circuit Model that Quantitatively Describes Domain-Wall Conductivity in Ferroelectric LiNbO3, Phys. Rev. Appl. 21 (2024) 024007, doi.org/10.1103/PhysRevApplied.21.024007

J. Klenen, F. Sauerwein, L. Vittadello, K. Kömpe, V. Hreb, V. Sydorchuk, U. Yakhnevych, D. Sugak, L. Vasylechko, M. Imlau, Gap-Free Tuning of Second and Third Harmonic Generation in Mechanochemically Synthesized Nanocrystalline LiNb1-xTaxO3 (0 ≤ x ≤ 1) Studied with Nonlinear Diffuse Femtosecond-Pulse Reflectometry, Nanomaterials 14 (2024) 317, https://doi.org/10.3390/nano14030317

C. Kofahl, L. Dörrer, H. Wulfmeier, H. Fritze, S. Ganschow, H. Schmidt; Hydrogen Diffusion in Li(Nb,Ta)O3 Single Crystals Probed by Infrared Spectroscopy and Secondary Ion Mass Spectrometry, Chem. Mater. 36 (2024) 1639-1647, https://doi.org/10.1021/acs.chemmater.3c02984

2023

H. Beccard, E. Beyreuther, B. Kirbus, S. D. Seddon, M. Rüsing, L. M. Eng, Hall Mobilities and Sheet Carrier Densities in an Single LiNbO3 Conductive Ferroelectric Domain Wall, Phys. Rev. Appl. 20 (2023) 064043, doi.org/10.1103/PhysRevApplied.20.064043

S. Hurskyy, U. Yakhnevych, C. Kofahl, E. Tichy-Racs, H. Schmidt, S. Ganschow, H. Fritze, Y. Suhak, Electrical Properties and Temperature Stability of Li-Deficient and Near Stoichiometric Li(Nb,Ta)O3 Solid Solutions up to 900 °C, Solid State Ionics 399 (2023) 116285, doi.org/10.1016/j.ssi.2023.11628

C. Kofahl, S. Ganschow, H. Schmidt; Experiments on Hydrogen Uptake and Diffusion in LiNb0.15Ta0.85O3Single Crystals by Infra-Red Spectroscopy, Defect and Diffusion Forum 429 (2023) 136-143, doi.org/10.4028/p-2J7FpE

C. Kofahl, L. Dörrer, H. Fritze, H. Schmidt, Hydrogen diffusion in proton-exchanged congruent Lithium Niobate during post-annealing, Solid State Ionics 403 (2023) 116383, doi.org/10.1016/j.ssi.2023.116383

S. Neufeld , U. Gerstmann, L. Padberg, C. Eigner, G. Berth, C. Silberhorn, L. M. Eng, W. G. Schmidt, M. Rüsing, Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family, Crystals 13 (2023) 1423, doi.org/10.3390/cryst13101423

C. Kofahl, L. Dörrer, B. Muscutt, S. Sanna, S. Hurskyy, U. Yakhnevych, Y. Suhak, H. Fritze, S. Ganschow, H. Schmidt; Li Self-Diffusion and Ion Conductivity in Congruent LiNbO3 and LiTaO3 Single Crystals, Phys. Rev. Mater. 7 (2023) 033403, doi.org/10.1103/PhysRevMaterials.7.033403

U. Bashir, K. Böttcher, D. Klimm, S. Ganschow, F. Bernhardt, S. Sanna, M. Rüsing, L.M. Eng, M. Bickermann, Solid Solutions of Lithium Niobate and Lithium Tantalate: Crystal Growth and the Ferroelectric Transition, Ferroelectrics 613 (2023) 250-262, doi.org/10.1080/00150193.2023.2189842.30

K.J. Spychala, Z.H. Amber, L.M. Eng, M. Rüsing, Modeling Nonlinear Optical Interactions of Focused Beams in Bulk Crystals and Thin Films: A Phenomenological Approach, J. Appl. Phys. 133 (2023) 123105, doi.org/10.1063/5.0136252

E. Singh, M. N. Pionteck, S. Reitzig, M. Lange, M. Rüsing, L. M. Eng, S. Sanna, Vibrational Properties of LiNbO3 and LiTaO3 Under Uniaxial Stress, Phys. Rev. Materials 7 (2023) 024420,  doi.org/10.1103/PhysRevMaterials.7.024420

U. Yakhnevych, C. Kofahl, S. Hurskyy, S. Ganschow, Y. Suhak, H. Schmidt, H. Fritze, Charge Transport and Acoustic Loss in Lithium Niobate-Lithium Tantalate Solid Solutions at Temperatures up to 900 °C, Solid State Ionics 392 (2023) 116147, doi.org/10.1016/j.ssi.2023.116147

U. Acevedo-Salas, B. Croes, Y. Zhang, O. Cregut, K. D. Dorkenoo, B. Kirbus, E. Singh, H. Beccard, M. Rüsing, L. Eng, R. Hertel, E.A. Eliseev, A.N. Morozovska, S. Cherifi-Hertel, Impact of 3D Corvature on the Polarization Orientation in Non-Ising Domain Walls, Nano Letters 23 (2023) 795-803; doi.org/10.1021/acs.nanolett.2c03579

2022


Z. H. Amber, K. J. Spychala, L. M. Eng, M. Rüsing, Nonlinear Optical Interactions in Focused Beams and Nanosized Structures, J. Appl. Phys. 132 (2022) 213102, doi.org/10.1063/5.0125926

P. A. Hegarty, L. M. Eng, M. Rüsing, Tuning the Čerenkov Second Harmonic Contrast from Ferroelectric Domain Walls via Anomalous Dispersion, J. Appl. Phys. 132 (2022) 214102, doi.org/10.1063/5.0115673

P. A. Hegarty, H. Beccard, L. M. Eng, M. Rüsing, Turn All the Lights Off: Bright- and Dark-Field Second-Harmonic Microscopy to Select Contrast Mechanisms for Ferroelectric Domain Walls, J. Appl. Phys. 131 (2022) 244102, doi.org/10.1063/5.0094988

H. Beccard, B. Kirbus, E. Beyreuther, M. Rüsing, P. Bednyakov, J. Hlinka, L. M. Eng, Nanoscale Conductive Sheets in Ferroelectric BaTiO3: Large Hall Electron Mobilities at Head-to-Head Domain Walls, ACS Appl. Nano Mater. 5 (2022) 8717–8722, doi.org/10.1021/acsanm.2c01919

E. Singh, H. Beccard, Z. H. Amber, J. Ratzenberger, C. W. Hicks, M. Rüsing, L. M. Eng, Tuning Domain Wall Conductivity in Bulk Lithium Niobate by Uniaxial Stress, Phys. Rev. B 106 (2022) 144103; doi.org/10.1103/PhysRevB.106.144103

J. Rix, M. Rüsing, R. Galli, J. Golde, S. Reitzig, L. M. Eng, E. Koch; Brillouin and Raman Imaging of Domain Walls in Periodically-Poled 5%-MgO:LiNbO3, Opt. Express 30 (2022) 5051; doi.org/10.1364/OE.447554

S. Reitzig, F. Hempel, J. Ratzenberger, P. A. Hegarty, Z. H. Amber, R.Buschbeck, M.Rüsing, L. M. Eng, High-speed Hyperspectral Imaging of Ferroelectric Domain Walls Using Broadband Coherent Anti-Stokes Raman Scattering, Appl. Phys. Lett. 120 (2022) 162901; doi.org/10.1063/5.0086029

F. Alarslan, L. Vitadello, J. Klein, Q. A. Khan, Ch. Kijatkin, M. Haase, H. Schäfer, M. Imlau, M. Steinhart, Thin Patterned Lithium Niobate Films by Parallel Additive Capillary Stamping of Aqueous Precursor Solutions, Advanced Engineering Materials 24 (2022) 2101159, doi.org/10.1002/adem.202101159

2021


J. Golde, M. Rüsing, J. Rix, L. M. Eng, E. Koch, Quantifying the Refractive Index of Ferroelectric Domain Walls in Periodically Poled LiNbO3 Single Crystals by Polarization-Sensitive Optical Coherence Tomography, Optics Express 29 (2021) 33615, doi.org/10.1364/OE.432810

 

F. Hempel, S. Reitzig, M. Rüsing, L. M. Eng, Broadband Coherent Anti-Stokes Raman Scattering for Crystalline Materials, Phys. Rev. B 104 (2021) 224308, doi.org/10.1103/PhysRevB.104.224308

 

J. Brockmeier, P.W. Mackwitz, M. Rüsing, C. Eigner, L. Padberg, M.Santandrea, C. Silberhorn, A. Zrenner, G. Berth, Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging, Crystals 11 (2021) 1086, doi.org/10.3390/cryst11091086

 

Z. Amber, B. Kirbus, L. M. Eng, M. Rüsing, Quantifying the Coherent Interaction Length of Second-Harmonic Microscopy in Lithium Niobate Confined Nanostructures, J. Appl. Phys. 130 (2021) 133102, doi.org/10.1063/5.0058996

 

A. Krampf, M. Imlau, Y. Suhak, H. Fritze, S. Sanna, Evaluation of Similarities and Differences of LiTaO3 and LiNbO3 Based on High-T-Conductivity, Nonlinear Optical fs-Spectroscopy and ab initio Modeling of Polaronic Structures, New J. Phys. 23 (2021) 033016, doi.org/10.1088/1367-2630/abe3ac

 

S. Reitzig, M. Rüsing, J. Zhao, B. Kirbus, S. Mookherjea, L. Eng, "Seeing is Believing” - In-Depth Analysis by Co-Imaging of Periodically-Poled X-Cut Lithium Niobate Thin Films, Crystals 11 (2021) 288, doi.org/10.3390/cryst11030288

 

Y. Suhak, D. Roshchupkin, B. Redkin, A. Kabir, B. Jerliu, S. Ganschow, H. Fritze, Correlation of Electrical Properties and Acoustic Loss in Single Crystalline Lithium Niobate-Tantalate Solid Solutions at Elevated Temperatures, Crystals 11 (2021) 398, doi.org/10.3390/cryst11040398

 

O. Buryy, I. Syvorotka, Y. Suhak, U. Yakhnevych, D. Sugak, S. Ubizskii, H. Fritze, Determination of Optimal Crystallographic Orientations for LiNbO3 and LiTaO3 Bimorph Actuators, J. Sens. Sens. Syst. 10 (2021) 121-126, doi.org/10.5194/jsss-10-121-2021

 

E. Beyreuther, J. Ratzenberger, M. Roeper, B. Kirbus, M. Rüsing, M., L. I. Ivleva, L. M. Eng, Photoconduction of Polar and Nonpolar Cuts of Undoped Sr0.61Ba0.39Nb2O6 Single Crystals, Crystals 11 (2021) 780, doi.org/10.3390/cryst11070780

 

S. Messerschmidt, A. Krampf, L. Vittadello, M. Imlau, T. Norenberg, L. M. Eng, D. Emin, Small-Polaron Hopping and Low-Temperature (45-225 K) Photo-Induced Transient Absorption in Magnesium-Doped Lithium Niobate, Crystals 10 (2020) 809, doi.org/10.3390/cryst10090809

 
Konferenzbeiträge  

L. Bollmers, P. Mackwitz, M. Massaro, B. Koppitz, M. Rüsing, L. M. Eng, G. Berth, A. Zrenner, Ch. Eigner, L. Padberg, Ch. Silberhorn, Investigation of periodic poling in LNOI, European Conference on Integrated Optics, 4-6 May 2022, Milan, Italy

 

S. Ubizskii, L. Vasylechko, V. Sydorchuk, A. Lakhnik, D. Sugak, I.I. Syvorotka, S. Hurskyj, U. Yakhnevych, V. Hreb, Yu. Suhak, H. Fritze, Investigations of LiNb1-xTaxO3 compounds with the stoichiometric composition as well as with the planned deviation from stoichiometry, MSE Congress, 27-29 September 2022, Darmstadt, Germany

 

M. Rüsing, Z. H. Amber, L. M. Eng, Nonlinear optical microscopy from bulk to thin film ferroelectric – What happens under optical confinement?, 15th International Symposium on Ferroic Domains and Micro to Nanoscopic Structures (ISFD-15), 28-31 August 2022, Kofu, Japan

 

L. M. Eng, E. Beyreuther, M. Zahn, H. Beccard, E. Singh, Th. Kämpfe , B. Kirbus, Z. Amber, P. Hegarty, M. Rüsing, P. Bednyakov, J. Hlinka, C. Hicks, S. Sanna, Quantifying, Tuning, and Reconfiguring 2D Electron Gases in Ferroic Domain Walls, 15th International Symposium on Ferroic Domains and Micro to Nanoscopic Structures (ISFD-15), 28-31 August 2022, Kofu, Japan

 

J. Golde, M. Rüsing, R. Kindler, S. Steuer, J. Rix, L. M. Eng, E. Koch, Investigation of ferroelectric domain walls in periodically-poled LiNbO3 single crystals by polarization-sensitive optical coherence tomography,  SPIE Photonics West 2022, 22-27 January 2022, San Francisco, USA

 

C. Kofahl, J. Uhlendorf, L. Dörrer, B. Muscutt, S. Sanna, Yu. Suhak, H. Fritze, S. Ganschow, G. Borchardt, H. Schmidt, Diffusion of Lithium and Hydrogen in Lithium Niobate and Lithium Tantalate Single Crystals and Solid Solutions, MSE Congress, 27-29 September 2022 Darmstadt,  Germany

 

Yu. Suhak, A. Kabir, D. Roshchupkin, B. Red’kin, S. Ganschow, H. Fritze, Oxygen Partial Pressure Dependent Electrical Conductivity of LiNb1-xTaxO3 Solid Solutions, SMSI 2021 Conference, 3-6 May 2021, Nürnberg, Germany

 

L. Vasylechko, V. Sydorchuk, S. Hurskyj, U. Yakhnevych, A. Lakhnik, I.I. Syvorotka, A. Luchechko, O. Buryy, D. Sugak, Ya. Zhydachevskyy, A. Suchocki, Yu. Suhak, H. Fritze, Obtaining and investigation of the LiNbO3, LiNbO3:Mg, LiTaO3 nanopowders doped with Pr ions, SMSI 2021 Conference, 3-6 May 2021, Nürnberg, Germany

 

Yu. Suhak, B. Jerliu, S. Ganschow, D. Roshchupkin, B. Red'kin, S. Sanna, H. Fritze, Electrical and Electromechanical Properties of Single Crystalline Li(Nb,Ta)O3 Solid Solutions up to 700 °C, SMSI 2021 Conference, 3-6 May 2021, Nürnberg, Germany

 

Yu. Suhak, B. Jerliu, D. Roshchupkin, B. Red’kin, H. Fritze, High-temperature stability of electrical and electromechanical properties of LiNb0.88Ta0.12O3, SAW-Symposium 2021, 14-15 October 2021, Dresden, Germany

 

S. Reitzig, F. Hempel, M. Rüsing, L. M. Eng, CARS Domain-Wall Analysis in single-crystalline Lithium Niobate, Nonlinear Optics Topical Meeting – Virtual OSA Meeting, 9-13 August 2021

 

F. Hempel, S. Reitzig, M. Rüsing, L. M. Eng, Broadband Coherent Anti-Stokes Raman Scattering on Solid State Systems, Nonlinear Optics Topical Meeting – Virtual OSA Meeting, 9-13 August 2021

 
Z. H. Amber, B. Kirbus, M. Rüsing, L. M. Eng, Second-harmonic microscopy in optically confining nanostructures, Nonlinear Optics Topical Meeting – Virtual OSA Meeting, 9-13 August 2021