Sep 12 – 17, 2010
Europe/Zurich timezone
The conference is now over. Thanks to all for their participation. <p> The talks from the various sessions are all online.

Perturbed gamma-gamma angular correlation studies of indium containing 211-MAX phases

Not scheduled
500/1-001 - Main Auditorium (CERN)

500/1-001 - Main Auditorium


CH - 1211 Geneva 23 Switzerland
Show room on map
POSTER Semiconductors, Metals and Insulators


Mr Daniel Juergens (II. Physikalisches Institut, Universitaet Goettingen)


The M(n+1)AXn (MAX) phases, where n is 1, 2 or 3, are nanolaminated layered hexagonal carbides and nitrides, which feature an unusual set of attributes of both metals and high-performance ceramics. Theses intermetallic compounds can be good electrical and thermal conductors, behave elastically stiff as well as high thermal shock resistant and damage tolerant. To investigate the local structure of these phases, the technique of perturbed angular correlation (PAC) was used for material characterization beside X-ray diffraction and electron microscopy. Radioactive 111In ions were implanted at 400 keV into the samples, sensing as spies their local environment via hyperfine interactions. The PAC technique was applied to the 211-MAX phases Ti2InC, Zr2InC and Nb2InC to determine strength and symmetry of the electric field gradients (EFG) as a fingerprint for probe atoms on the A-site. In each material an axially symmetric EFG was found with a characteristic quadrupole coupling constant varying between 200 MHz and 350 MHz. Regarding to the question of lattice location we demonstrate that the In-probes occupy the A-site since In is the self-atom on the unique A-site in these phases and by comparing the experimental results with ab initio DFT calculations using the FP-LAPW+LO method implemented in the WIEN2k package.
Are you a student, a delegate from developing countries or a participant with physical needs and would like to apply for a sponsored accomodation. Please answer with yes or no. no
Please specify whether you would prefer an oral or poster contribution. Poster contribution

Primary author

Mr Daniel Juergens (II. Physikalisches Institut, Universitaet Goettingen)


Prof. Hans Hofsaess (II. Physikalisches Institut, Universitaet Goettingen) Prof. Jose Mestnik-Filho (Instituto de Pesquisas Energeticas e Nucleares) Dr Michael Uhrmacher (II. Physikalisches Institut, Universitaet Goettingen) Prof. Michel W. Barsoum (Department of Material Science and Engineering, Drexel University) Dr Ulrich Vetter (II. Physikalisches Institut, Universitaet Goettingen)

Presentation materials

There are no materials yet.