Speaker
Dr
Martin Mansson
(Laboratory for Solid State Physics, ETH Zurich)
Description
The drastic change from an insulating antiferromagnet to a superconducting state in cuprates, is probably the best example of how a slight change in carrier-density governs the magnetic/electronic properties of a material. Further, also ion-order within the intermediate charge-reservoir layers is of importance e.g. charge-order in the battery-type material NaxCoO2. In this compound, a novel low-
temperature magnetic phase was presented, connected to the thermal history above 200K i.e. also ion-dynamics is crucial. From the context of rechargeable batteries for electrical automobiles, we present a novel experimental method [Sugiyama-PRL/103/147601/(2009)] to investigate microscopic ion-dynamics in lithium-transition-metal-oxides (Li-TMO's). By using muon-spin relaxation we
obtained unique results from many different Li-TMO's. Here we summarize these results and the importance for development of novel thin-film batteries is discussed. Finally, we will present our latest results, regarding Na-dynamics in magnetically frustrated NaxCoO2 so as to understand the possibility of tuning it's magnetic/electronic properties.
Funding: Toyota Central Research & Development Labs. Inc.
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Poster
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Primary author
Dr
Martin Mansson
(Laboratory for Solid State Physics, ETH Zurich)
Co-authors
Prof.
Andrey Zheludev
(Laboratory for Solid State Physics, ETH Zurich)
Dr
Ekaterina Pomjakushina
(LDM, PSI, Switzerland)
Dr
Fanni Juranyi
(LNS, PSI, Switzerland)
Dr
Hiroshi Nozaki
(Toyota Central Research and Development Labs. Inc., Japan)
Prof.
Isao Watanabe
(Muon Science Laboratory, RIKEN, Japan)
Dr
James S. Lord
(ISIS, Rutherford Appleton Laboratory, U.K.)
Dr
Jorge Gavilano
(LNS, PSI, Switzerland)
Dr
Jun Sugiyama
(Toyota Central Research and Development Labs. Inc., Japan)
Dr
Kazimierz Conder
(LDM, PSI, Switzerland)
Dr
Kazuhiko Mukai
(Toyota Central Research and Development Labs. Inc., Japan)
Dr
Kazuya Kamazawa
(Toyota Central Research and Development Labs. Inc., Japan)
Dr
Masashi Harada
(Toyota Central Research and Development Labs. Inc., Japan)
Prof.
Tsunehiro Takeuchi
(Department of Crystalline Materials Science, Nagoya University, Japan)
Prof.
Tsutomu Ohzuku
(Dep. of Applied Chemistry, Osaka City University, Japan)
Dr
Vladimir Pomjakushin
(LNS, PSI, Switzerland)
Dr
Yutaka Ikedo
(Muon Science Laboratory, KEK, Japan)
