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 LiNb_1-xTa_xO₃ 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 (LiNb_1-xTa_xO₃) (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 LiNb_1-xTa_xO₃ 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 LiNb_1-xTa_xO₃ (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

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 LiNb_0.15Ta_0.85O₃Single 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

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

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 Sr_0.61Ba_0.39Nb₂O₆ 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