Project A6

Microstructure and Structual Change of Magnetoelectric and Piezotronic Sensors

The combination of high resolution synchrotron-based X-ray scattering techniques and advanced transmission electron microscopy methods provides a unique view of the structural behavior of model sensors in situ and in operando. The synergetic combination covers a broad range of length scales, thus, enabling to investigate the local strain from the atomic to the µm dimensions. Here we plan to examine model sensors and their components, particularly as developed in projects A1 and A5 in identical and complimentary geometries allowing us to visualize strain and defect behavior in detail. These results will be returned to the project partners to ensure a knowledge-based enhancement of the sensor performance.

 

Lorenz Kienle
Prof. Dr. rer. nat.
Lead of project A6
Bridget Murphy
Dr.
Lead of project A6
Niklas Wolff
M. Sc.
Doctoral researcher
Philipp Jordt
M. Sc.
Doctoral researcher
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Role within the Collaborative Research Centre

The unique combination of synchrotron based techniques and atomically resolved electron microscopy enables us to analyze the piezotronic (A5) and multilayer materials (A1) and sensors on all relevant length scales, ex situ and in situ. A6 develops new and advanced in situ examination methods in close collaboration with these projects. Moreover, A6 establishes the competence center for advanced structural and nanoanalytical research within the CRC. In order to identify new scientifically demanding tasks which cannot be foreseen at the present date, A6 also provides preliminary nanoanalytical examinations for several other projects, like A2, A3/A7, A8, and Z1. Additional characterization of samples that is not part of the work packages will be performed by permanent staff, e.g. of the TEM center (Dr. Schürmann). Scheduled tasks are at the moment:

A2: Spatial distribution of magnetic particles inside metamaterials and development of PtP devices.
A3, A7: Temperature-dependent changes of the microstructure, e.g. of TiNi substrates.
A5: Measurements of mechanical deformations provided to A5.
A8: Model for strain in magnetostrictive thin layers.
Z1: Interrelation of piezoelectric performance, microstructure, and chemical composition of AlScN materials.


The major goal of these experiments is to understand the role that structure and stress play in sensor performance from the atomic scale to grain size to microscopic sample size. By understanding these key parameters via XRD and TEM studies, we can work towards knowledge-based sensor design. In addition, we aim to develop micro and nanostructure analysis by achieving a united approach of these powerful structural determination methods.

Project A6 will participate in the focus group F1 “Modeling” and in the focus group F2 “Sensor Concepts”, where the nanostructural aspects of the sensors and their components provide essential information to the project partners.

Project-related Publications

U. Schürmann, C. Chluba, N. Wolff, D. Smazna, R. Lima de Miranda, P. Junker, R. Adelung, E. Quandt, L. Kienle: Functional NiTi grids for in situ straining in the TEM; Ultramicroscopy, Vol. 182, pp. 10-16, November 2017. https://doi.org/10.1016/j.ultramic.2017.06.003

S. B. Hrkac, C. T. Koops, M. Abes, C. Krywka, M. Müller, M. Burghammer, M. Sztucki, T. Dane, Kaps, Y. K. Mishra,R. Adelung, J. Schmalz, M. Gerken, E. Lage, C. Kirchhof, E. Quandt, O. M. Magnussen, and B. M. Murphy: Tunable Strain in Magnetoelectric ZnO Microrod Composite Interfaces; ACS Appl. Mater. Interfaces, 2017, 9 (30), pp 25571–25577; DOI: 10.1021/acsami.6b15598

D. Smazna, N. Wolff, S. Shree, F. Schütt, Y.K. Mishra, L- Kienle, R. Adelung, "Enhancing the conductivity of ZnO micro- and nanowire networks with gallium oxide" 2017 IEEE 7th International Conference Nanomaterials: Application & Properties (NAP), Odessa, 2017, pp. 01FNC07-1-01FNC07-5. doi: 10.1109/NAP.2017.8190199

S. Fichtner, N. Wolff, G. Krishnamurthy, A. Petraru, S. Bohse, F. Lofink, S. Chemnitz, H. Kohlstedt, L. Kienle, and B. Wagner: Identifying and overcoming the interface originating c-axis instability in highly Sc enhanced AlN for piezoelectric micro-electromechanical systems. Journal of Applied Physics 122, 035301, July 2017. http://dx.doi.org/10.1063/1.4993908 

S. Kaps, S. Bhowmick, J. Gröttrup, V. Hrkac, D. Stauffer, H. Guo, O. L. Warren, J. Adam, L. Kienle, A. M. Minor, R. Adelung, and Y. K. Mishra: Piezoresistive Response of Quasi-One-Dimensional ZnO Nanowires Using an in Situ Electromechanical Device. Acs Omega, 2(6), 2985-2993, June 2017. http://dx.doi.org/10.1021/acsomega.7b00041 

E. Yarar, S. Salzer, V. Hrkac, A. Piorra, M. Höft, R. Knöchel, L. Kienle, and E. Quandt: Inverse Bilayer Magnetoelectric Thin Film Sensor; Appl. Phys. Lett. 109, 022901 (2016); http://dx.doi.org/10.1063/1.4958728

E. Yarar, V. Hrkac, C. Zamponi, A. Piorra, L. Kienle, and E. Quandt: Low Temperature Aluminum Nitride Thin Films for Sensory Applications, AIP Advances, 6, 075115 (2016); http://dx.doi.org/10.1063/1.4959895

M. Abes, C. T. Koops, S. B. Hrkac, J. McCord, N. O. Urs, N. Wolff, L. Kienle, W. J. Ren, L. Bouchenoire, B. M. Murphy, and O. M. Magnussen: Domain Structure and Reorientation in CoFe2O4, Phys. Rev. B 93, 195427 (2016) http://dx.doi.org/10.1103/PhysRevB.93.195427

Financial Support

The Collaborative Research Center 1261 is funded by the German Research Foundation (DFG).

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Upcoming Events

Recent Publications

J. Reermann, P. Durdaut, S. Salzer, T. Demming, A. Piorra, E. Quandt, N. Frey, M. Höft, and G. Schmidt: Evaluation of Magnetoelectric Sensor Systems for Cardiological Applications, Measurement (Elsevier), ISSN 0263-2241, 2017, https://doi.org/10.1016/j.measurement.2017.09.047

S. B. Hrkac, C. T. Koops, M. Abes, C. Krywka, M. Müller, M. Burghammer, M. Sztucki, T. Dane, Kaps, Y. K. Mishra,R. Adelung, J. Schmalz, M. Gerken, E. Lage, C. Kirchhof, E. Quandt, O. M. Magnussen, and B. M. Murphy: Tunable Strain in Magnetoelectric ZnO Microrod Composite Interfaces; ACS Appl. Mater. Interfaces, 2017, 9 (30), pp 25571–25577; DOI: 10.1021/acsami.6b15598

 

Contact

sfb1261@tf.uni-kiel.de

Chairman:

Prof. Dr. Eckhard Quandt

Kiel University
Institute for Materials Science

 

Interner Server

 

CAU

Christian-Albrechts-Universität zu Kiel (CAU)

Christ.-Albrechts-Platz 4
D-24118 Kiel

UKSH

University Hospital Schleswig-Holstein, Campus Kiel (UKSH)

Arnold-Heller-Straße 3
D-24105 Kiel

ISIT

Fraunhofer Institute for Silicon Technology, Itzehoe (ISIT)

Fraunhoferstrasse 1
D-25524 Itzehoe  

IPN

IPN - Leibniz-Institut für die Pädagogik der Naturwissenschaften und Mathematik an der Universität Kiel

Olshausenstraße 62 
D-24118 Kiel

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