M. Alexe

Vortex Ferroelectric Domains (2008)

Gruverman, A., Wu, D., Vrejoiu, I., Alexe, M., Harrison, R. J., ...

We show experimental switching data on microscale capacitors of lead-zirconate-titanate (PZT), which reveal time-resolved domain behavior during switching on a 100-ns scale. For small circular...

Growth, microstructure, and ferroelectric properties of Pb(Zr0.4Ti0.6)O3PbZrO3 super-lattices prepared on SrTiO3(100) substrates by pulsed laser deposition. (2007)

Bao, D.H., Scholz, R., Alexe, M., Hesse, D.

Microstructure and electrical properties of (120)o-oriented and of (001)o-oriented epitaxial antiferroelectric PbZrO3 thin films on (100) SrTiO3 substrates covered with different oxide bottom electrodes. (2007)

Boldyreva, K., Bao, D. H., Le Rhun, G., Pintilie, L., Alexe, M., Hesse, D.

Thickness-driven antiferroelectric-to-ferroelectric phase transition of thin PbZrO3 layers in epitaxial PbZrO3 /Pb(Zr0.8 Ti0.2 )O3 multilayers. (2007)

Boldyreva, K., Pintilie, L., Lotnyk, A., Misirlioglu, I. B., Alexe, M., Hesse, D.

Adhesive wafer bonding for wafer-level fabrication of microring resonators. (2007)

Dragoi, V., Mittendorfer, G., Thanner, C., Alexe, M., Pintilie, L., Hamacher, M., ...

Probing strain propagation in nanolayered perovskites by diffraction of femtosecond x-ray pulses. (2007)

Bargheer, M., Kiel, M., Zhavoronkov, N., Woerner, M., Elsaesser, T., ...

Coupled ultrafast lattice and polarization dynamics in ferroelectric nanolayers. (2007)

Bargheer, M., Kiel, M., Zhavoronkov, N., Woerner, M., Elsaesser, T., ...

Ultrafast structure and polarization dynamics in nanolayered perovskites studied by femtosecond X-ray diffraction. (2007)

Bargheer, M., Kiel, M., Zhavoronkov, N., Woerner, M., Elsaesser, T., ...

Piezoelectric response hysteresis in the presence of ferroelastic 90⁰ domain walls. (2007)

Le Rhun, G., Vrejoiu, I., Alexe, M.

Investigation on switching kinetics in epitaxial Pb(Zr 0,2Ti0,8)O3 ferroelectric thin films: Role of the 90/circ domain walls. (2007)

Li, W., Alexe, M.

Space charge contribution to the apparent enhancement of polarization in ferroelectric bilayers and multilayers (2007)

Misirlioglu, I. B., Alexe, M., Pintilie, L., Hesse, D.

Antiferroelectric hysteresis loops with two exchange constants using the two dimensional Ising model (2007)

Misirlioglu, I. B., Pintilie, L., Boldyreva, K., Alexe, M., Hesse, D.

Extrinsic contributions to the apparent thickness dependence of the dielectric constant in epitaxial Pb(Zr,Ti)O3 thin films (2007)

Pintilie, L., Vrejoiu, I., Hesse, D., LeRhun, G., Alexe, M.

Ferroelectric polarization-leakage current relation in high quality epitaxial Pb(Zr,Ti)O3 films (2007)

Pintilie, L., Vrejoiu, I., Hesse, D., LeRhun, G., Alexe, M.

Short-circuit photocurrent in epitaxial lead zirconate-titanate thin films (2007)

Pintilie, L., Vrejoiu, I., Le Rhun, G., Alexe, M.

Structure and properties of epitaxial ferroelectric PbZr0.4Ti0.6O3/PbZr0.6Ti0.4O3 superlattices grown on SrTiO3 (001) by pulsed laser deposition (2007)

Vrejoiu, I., Zhu, Y. L., Le Rhun, G., Schubert, M. A., Hesse, D., Alexe, M.

Characterization of PZT nanostructures by infrared spectroscopy (2007)

Zelezný, V., Chvostová, C., Szafraniak, I., Alexe, M.

Adhesive wafer bonding for wafer-level fabrication of microring resonators (2007)

Dragoi, V., Mittendorfer, G., Thanner, C., Alexe, M., Pintilie, L., Hamacher, M., ...

GaInAsP/InP passive microring resonator devices were successfully fabricated using a vertical integration concept with GaInAsP/InP-on-GaAs wafer bonding. BCB adhesive bonding has been identified as...

Vertically coupled GalnAsP/lnP microring lasers fabricated by using full wafer bonding (2007)

Heidrich, H., Hamacher, M., Troppenz, U., Syvridis, D., Alexandropoulos, D., Mikroulis, S., ...

We summarize results on the processing and characterization of current injected 1.55 µm single- and multi-microring lasers including vertical active/passive waveguide coupling. The devices were...

Epitaxial-quality PZT-Insulator or semiconductor (2006)

Pintilie, L., Lisca, M., Alexe, M.

Controllable charge density in the Si nanocrystals nonvolatile memory (2006)

Shen, J., Lu, T., Alexe, M., Kidun, O., Zacharias, M.

Self-assembled nanoscale ferroelectrics (2006)

Alexe, M., Hesse, D.

Thickness effect in Pb(Zr$_{0.2}$Ti$_{0.8}$)O$_3$ ferroelectric thin films grown by pulsed laser deposition (2006)

Lisca, M., Pintilie, L., Alexe, M., Teodorescu, C. M.

Ferroelectric nanotubes fabricated using nanowires as positive templates (2006)

Alexe, M., Hesse, D., Schmidt, V., Senz, S., Fan, H. J., Zacharias, M., ...

Si nanocrystal based memories: Effect of the nanocrystal density (2006)

Lu, T. Z., Alexe, M., Scholz, R., Talalaev, V. G., Zhang, R. J., Zacharias, M.

Threading dislocations in epitaxial ferroelectric PbZr$_{0.2}$Ti$_{0.8}$O$_{3}$ films and their effect on polarization backswitching (2006)

Vrejoiu, I., Le Rhun, G., Zakharov, N. D., Hesse, D., Pintilie, L., Alexe, M.

Increased ferroelastic domain mobility in ferroelectric thin films and its use in nano-patterned capacitors (2006)

Le Rhun, G., Vrejoiu, I., Pintilie, L., Hesse, D., Alexe, M., Gösele, U.

Epitaxial-quality PZT - Insulator or semiconductor (2006)

Pintilie, L., Lisca, M., Alexe, M.

Polarization fatigue and frequency-dependent recovery in Pb(Zr,Ti)O$_3$ epitaxial thin films with SrRuO$_3$ electrodes (2006)

Pintilie, L., Vrejoiu, I., Hesse, D., Alexe, M.

Strain propagation in nanolayered perovskites probed by ultrafast x-ray diffraction (2006)

Bargheer, M., Kiel, M., Zhavoronkov, N., Woerner, M., Elsaesser, T., ...

Template-assisted large-scale ordered arrays of ZnO pillars for optical and piezoelectric applications (2006)

Fan, H. J., Lee, W., Hauschild, R., Alexe, M., Le Rhun, G., Scholz, R., ...

Intrinsic ferroelectric properties of strained tetragonal PbZr$_{0.2}$Ti$_{0.8}$O$_3$ obtained on layer-by-layer grown, defect-free single crystalline films (2006)

Vrejoiu, I., Le Rhun, G., Pintilie, L., Hesse, D., Alexe, M., Gösele, U.

Higher-order electromechanical response of thin films by contact resonance piezoresponse force microscopy (2006)

Harnagea, C., Pignolet, A., Alexe, M., Hesse, D.

Self-assembled nanoscale ferroelectrics (2006)

Alexe, M., Hesse, D.

Wafer-level fabrication of microring resonators using adhesive wafer bonding (2006)

Dragoi, V., Mittendorfer, G., Thanner, C., Lindner, P., Alexe, M., Pintilie, L., ...

This paper reports the first microring resonators device fabrication at wafer-level using adhesive bonding with BCB (benzocyclobutene) intermediate layers. The vertical coupling concept was used...

Metal-Ferroelectric-Metal heterostructures with Schottky contacts I. Influence of the ferroelectric properties (2005)

Pintilie, L., Alexe, M.

A model for Metal-Ferroelectric-Metal structures with Schottky contacts is proposed. The model adapts the general theories of metal-semiconductor rectifying contacts for the particular case of...

Metal-Ferroelectric-Metal structures with Schottky contacts: II. Analysis of the experimental current-voltage and capacitance-voltage characteristics of Pb(Zr,Ti)O3 thin films (2005)

Pintiliea, L., Boerasu, I., Gomes, M. J. M., Zhao, T., Ramesh, R., Alexe, M.

A modified model of metal-semiconductor contacts is applied to analyze the capacitance-voltage and current-voltage characteristics of metal-ferroelectric-metal structures. The ferroelectric...

Morphology and microstructure of all-epitaxial ferroelectric tri-layered (Bi,La)4Ti3O12/Pb(Zr0.4Ti0.6)O3/(Bi,La)4Ti3O12 thin films on SrTiO3 (110) (2005)

Zhu, X.H., Bao, D.H., Alexe, M., Hesse, D.

High resolution electron energy-loss spectroscopy of BaTiO3/SrTiO3 multilayers (2005)

Zhang, J.M., Visinoiu, A., Heyroth, F., Syrowatka, F., Alexe, M., Hesse, D., ...

Morphology dependence of the dielectric properties of epitaxial BaTiO3 films and epitaxial BaTiO3/SrTiO3 multilayers (2005)

Visinoiu, A., Scholz, R., Alexe, M., Hesse, D.

Lateral size of self-patterned nanostructures controlled by multi-step deposition (2005)

Szafraniak, I., Hesse, D., Alexe, M.

Ferroelectric-like hysteresis loop in nonferroelectric systems (2005)

Pintilie, L., Alexe, M.

Polarization reversal and C-V characteristics of epitaxial Pb(Zr,Ti)O3 layers (2005)

Pintilie, L., Lisca, M., Alexe, M.

Lead-based ferroelectric compounds: Insulators or semiconductors? (2005)

Pintilie, L., Lisca, M., Alexe, M.

Metal-ferroelectric-metal structures with Schottky contacts: II. Analysis of the experimental current-voltage and capacitance-voltage characteristics of Pb(Zr,Ti)O3 thin films (2005)

Pintilie, L., Boerasu, I., Gomes, M.J.M., Zhao, T., Ramesh, R., Alexe, M.

Metal-ferroelectric-metal heterostructures with Schottky contacts I. influence of the ferroelectric properties (2005)

Pintilie, L., Alexe, M.

Investigations in the dynamics of a metal-ferroelectric-semiconductor heterostructure (2005)

Mereu, B., Alexe, M., Diestelhorst, M., Cristescu, C.P., Stan, C.

Interface trap density in amorphous La2Hf2O7/SiO2 high-k gate stacks on Si (2005)

Mereu, B., Dimoulas, A., Vellianitis, G., Apostolopoulos, G., Scholz, R., Alexe, M.

Chaos supported stochastic resonance in a metal-ferroelectric-semiconductor heterostructure (2005)

Mereu, B., Cristescu, C.P., Alexe, M.

Multilevel charge storage in Si nanocrystal superlattices (2005)

Lu, T.Z., Alexe, M., Scholz, R., Zacharias, M.

Electrical behavior of size-controlled Si nanocrystals arranged as single layers (2005)

Lu, T., Shen, J., Mereu, B., Alexe, M., Scholz, R., Talalaev, V.G., ...

Metal membranes with hierarchically organized nanotube arrays (2005)

Lee, W., Alexe, M., Nielsch, K., Gö”sele, U.

Growth and characterisation of epitaxial ferroelectric lanthanum substituted bismuth titanate nanostructures with three different orientations (2005)

Lee, S.K., Hesse, D., Alexe, M., Lee, W., Nielsch, K., G”ösele, U.

Well-ordered large-area arrays of epitaxial ferroelectric (Bi,La)4Ti3O12 nanostructures fabricated by gold nanotube-membrane lithography (2005)

Lee, S.K., Lee, W., Alexe, M., Nielsch, K., Hesse, D., Gö”sele, U.

Interfaces in nanosize perovskite titanate ferroelectrics - microstructure and impact on selected properties (2005)

Hesse, D., Alexe, M.

Elastic coupling between 90° twin walls and interfacial dislocations in epitaxial ferroelectric perovskites: A quantitative high-resolution transmission electron microscopy study (2005)

Szafraniak, I., Hesse, D., Alexe, M., G”ösele, U.

All-Epitaxial Trilayered Ferroelectric (Bi,La)4Ti3O12/Pb(Zr0.4Ti0.6)O3/(Bi,La)4Ti3O12 Thin Films on SrTiO3 Substrates by Pulsed Laser Deposition (2005)

Bao, D.H., Zhu, X.H., Alexe, M., Hesse, D.

Microstructure and ferroelectric properties of low-fatigue epitaxial, all (001)-oriented (Bi,La)4Ti3O12/Pb(Zr0.4Ti0.6)O3/(Bi,La)4Ti3O12 trilayered thin films on (001) SrTiO3 substrates (2005)

Bao, D.H., Zhu, X.H., Alexe, M., Hesse, D.

Growth, structure, and properties of all-epitaxial ferroelectric (Bi,La)4Ti3O12/Pb(Zr0.4Ti0.6)O3/(Bi,La)4Ti3O12 trilayered thin films on SrRuO3-covered SrTiO3(011) substrates (2005)

Bao, D.H., Lee, S.K., Zhu, X.H., Alexe, M., Hesse, D.

All-epitaxial multilayered ferroelectric (Bi,La)4Ti3O12/Pb(Zr0.4Ti0.6)O3 thin films on SrTiO3 substrates by pulsed laser deposition (2005)

Bao, D., Zhu, X., Alexe, M., Hesse, D.

Non-conventional micro- and nanopatterning techniques for electroceramics (2005)

Alexe, M., Harnagea, C., Hesse, D., Setter, N.

Ferroelectric lead zirconate titanate and barium titanate nanoshell tubes (2004)

Luo, Y., Szafraniak, I., Nagarajan, V., Wehrspohn, R.B., Steinhart, M., Wendorff, J.H., ...

Wafer Bonding - Applications and Technology (2004)

Alexe, M.

Nanoscale Characterisation of Ferroelectric Materials - Scanning Probe Microscopy Approach (2004)

Alexe, M.

Possibilities and limitations of voltage-modulated scanning force microscopy: Resonances in contact mode (2004)

Harnagea, C., Pignolet, A., Alexe, M., Hesse, D.

Epitaxial lead zirconate titanate nanocrystals obtained by a self-patterning method (2004)

Szafraniak, I., Harnagea, C., Scholz, R., Hesse, D., Alexe, M.

Ferroelectric epitaxial nanocrystals obtained by a self-assembly method (2004)

Szafraniak, I., Bhattacharyya, S., Harnagea, C., Scholz, R., Alexe, M.

Electric and ferroelectric properties of Pb(Zr0.2Ti0.8)O3 thin films deposited by pulsed laser deposition on single crystalline substrates (2004)

Pintilie, L., Lisca, M., Alexe, M.

Ferroelectric lead zirconate titanate and barium titanate nanoshell tubes (2004)

Luo, Y., Szafraniak, I., Nagarajan, V., Wehrspohn, R.B., Steinhart, M., Wendorff, J.H., ...

Effects on surface morphology of epitaxial Y2O3 layers on Si (001) after postgrowth annealing (2004)

Ioannou-Sougleridis, V., Constantoudis, V., Alexe, M., Scholz, R., Vellianitis, G., Dimoulas, A.

Impact of misfit dislocations on the polarization instability of epitaxial nanostructured ferroelectric perovskites (2004)

Szafraniak, I., Scholz, R., Harnagea, C., Hesse, D., Alexe, M., ...

Growth model of epitaxial Pb(Zr0.52Ti0.48)O3 nanoislands (2004)

Szafraniak, I., Scholz, R., Hesse, D., Alexe, M., Gösele, U.

HRTEM study on the role of misfit dislocations in the ferroelectric size effect of epitaxial Pb(Zr, Ti)O3 nanoislands (2004)

Scholz, R., Szafraniak, I., Alexe, M., Hesse, D.

Wafer bonding of ferroelectric materials (2004)

Alexe, M., Radu, I., Szafraniak, I.

Non-conventional micro- and nanopatterning techniques for electroceramics (2004)

Alexe, M., Harnagea, C., Hesse, D.

Ferroelectric Nanotubes (2003)

Morrison, F. D., Luo, Y., Szafraniak, I., Nagarajan, V., Wehrspohn, R. B., Steinhart, M., ...

We report the independent invention of ferroelectric nanotubes from groups in several countries. Devices have been made with three different materials: lead zirconate-titanate PbZr1-xTixO3 (PZT);...

Fabrication of Isolated Ferroelectric Nanostructures (2003)

Bhattacharyya, S., Chattopadhyay, Soma, Alexe, M.

In this report, we explore the possibilities of the fabrication and characterization of ferroelectric nano-structures by various methods. Techniques include the self-assembly route and direct...

Fabrication of metal-ferroelectric-silicon structure by layer transfer via wafer bonding (2003)

Szafraniak, I., Alexe, M., Gösele, U.

Ferroelectric epitaxial nanocrystals obtained by a self-patterning method (2003)

Szafraniak, I., Harnagea, C., Scholz, R., Bhattacharyya, S., Hesse, D., Alexe, M.

Nanoscale ferroelectrics (2003)

Alexe, M., Szafraniak, I., Harnagea, C., Hesse, D.

Fabrication of isolated ferroelectric nanostructures (2003)

Bhattacharyya, S., Chattopadhyay, S., Alexe, M.

Fabrication of GaAs laser diodes on Si using low-temperature bonding of MBE-grown GaAs wafers with Si wafers (2003)

Cengher, D., Hatzopoulos, Z., Gallis, S., Deligeorgis, G.,