Shear strain in Nd0.5Ca0.5MnO3 at high pressures
(2005) In Physical Review Letters 94(16).- Abstract
- High-pressure x-ray powder diffraction has been measured on the half doped rare earth manganite Nd0.5Ca0.5MnO3 up to a pressure of 15 GPa. We report the presence of a quantifiable amount of shear distortion of the MnO6 octahedra in Nd0.5Ca0.5MnO3 at high pressures. The lattice strain of Nd0.5Ca0.5MnO3 is minimal at a crossover pressure of p*similar to 7 GPa, with the same lattice strain above and below this pressure achieved by shear and Jahn-Teller-type distortions, respectively. The increase in shear strain with increasing pressure provides a mechanism for the insulating behavior of manganites at high pressures that has not been considered before.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/910864
- author
- Arulraj, A ; Dinnebier, RE ; Carlson, Stefan LU ; Hanfland, M and van Smaalen, S
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 94
- issue
- 16
- publisher
- American Physical Society
- external identifiers
-
- wos:000228763800046
- scopus:18144392736
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.94.165504
- language
- English
- LU publication?
- yes
- id
- da6914e4-05e8-43fc-9a02-494c844613a3 (old id 910864)
- date added to LUP
- 2016-04-01 11:37:11
- date last changed
- 2022-01-26 07:43:06
@article{da6914e4-05e8-43fc-9a02-494c844613a3, abstract = {{High-pressure x-ray powder diffraction has been measured on the half doped rare earth manganite Nd0.5Ca0.5MnO3 up to a pressure of 15 GPa. We report the presence of a quantifiable amount of shear distortion of the MnO6 octahedra in Nd0.5Ca0.5MnO3 at high pressures. The lattice strain of Nd0.5Ca0.5MnO3 is minimal at a crossover pressure of p*similar to 7 GPa, with the same lattice strain above and below this pressure achieved by shear and Jahn-Teller-type distortions, respectively. The increase in shear strain with increasing pressure provides a mechanism for the insulating behavior of manganites at high pressures that has not been considered before.}}, author = {{Arulraj, A and Dinnebier, RE and Carlson, Stefan and Hanfland, M and van Smaalen, S}}, issn = {{1079-7114}}, language = {{eng}}, number = {{16}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{Shear strain in Nd0.5Ca0.5MnO3 at high pressures}}, url = {{http://dx.doi.org/10.1103/PhysRevLett.94.165504}}, doi = {{10.1103/PhysRevLett.94.165504}}, volume = {{94}}, year = {{2005}}, }