LaSeTe2 - Temperature Dependent Structure Investigation and Electron Holography on a Charge-Density-Wave-Hosting Compound
(2003) In Chemistry - A European Journal 9(23). p.5865-5872- Abstract
Single crystals of LaSeTe2 have been prepared by reaction of the elements in a LiCl/RbCl flux at 970 K for seven days. Satellite reflections observed in diffraction experiments indicate the presence of an incommensurate lattice distortion, which is of the charge-density-wave (CDW) type. The modulated structure has been solved from X-ray data at 173, 293, and 373 K. LaSeTe2 crystallizes in the 3+1-dimensional orthorhombic superspace group Cmcm(00γ)s00 (No. 63.2) with lattice parameters of a = 4.295(1), b = 25.371(4), c = 4.306(1) Å (173K), a = 4.297(1), b = 25.408(4), c = 4.309(1) Å (293 K), and a = 4.309(1), b = 25.481(6), c = 4,321(1) Å (373 K). The modulation vector q = (0, 0, 0.288) does not change over the... (More)
Single crystals of LaSeTe2 have been prepared by reaction of the elements in a LiCl/RbCl flux at 970 K for seven days. Satellite reflections observed in diffraction experiments indicate the presence of an incommensurate lattice distortion, which is of the charge-density-wave (CDW) type. The modulated structure has been solved from X-ray data at 173, 293, and 373 K. LaSeTe2 crystallizes in the 3+1-dimensional orthorhombic superspace group Cmcm(00γ)s00 (No. 63.2) with lattice parameters of a = 4.295(1), b = 25.371(4), c = 4.306(1) Å (173K), a = 4.297(1), b = 25.408(4), c = 4.309(1) Å (293 K), and a = 4.309(1), b = 25.481(6), c = 4,321(1) Å (373 K). The modulation vector q = (0, 0, 0.288) does not change over the temperature interval. Electron holographic investigations confirm the existence of the modulation and help to visualize the charge-density wave.
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- author
- Doert, Thomas ; Fokwa, Boniface Polequin Tsinde ; Simon, Paul ; Lidin, Sven LU and Söhnel, Tilo
- publishing date
- 2003-12-05
- type
- Contribution to journal
- publication status
- published
- keywords
- Charge-density wave, Electron holography, Lanthanides, Polychalcogenides, Solid-state structure
- in
- Chemistry - A European Journal
- volume
- 9
- issue
- 23
- pages
- 8 pages
- publisher
- Wiley-Blackwell
- external identifiers
-
- scopus:0346993135
- ISSN
- 0947-6539
- DOI
- 10.1002/chem.200305148
- language
- English
- LU publication?
- no
- id
- ee658112-4995-4ace-afcd-cd97f24773e7
- date added to LUP
- 2019-04-08 15:29:30
- date last changed
- 2022-01-31 18:51:58
@article{ee658112-4995-4ace-afcd-cd97f24773e7, abstract = {{<p>Single crystals of LaSeTe<sub>2</sub> have been prepared by reaction of the elements in a LiCl/RbCl flux at 970 K for seven days. Satellite reflections observed in diffraction experiments indicate the presence of an incommensurate lattice distortion, which is of the charge-density-wave (CDW) type. The modulated structure has been solved from X-ray data at 173, 293, and 373 K. LaSeTe<sub>2</sub> crystallizes in the 3+1-dimensional orthorhombic superspace group Cmcm(00γ)s00 (No. 63.2) with lattice parameters of a = 4.295(1), b = 25.371(4), c = 4.306(1) Å (173K), a = 4.297(1), b = 25.408(4), c = 4.309(1) Å (293 K), and a = 4.309(1), b = 25.481(6), c = 4,321(1) Å (373 K). The modulation vector q = (0, 0, 0.288) does not change over the temperature interval. Electron holographic investigations confirm the existence of the modulation and help to visualize the charge-density wave.</p>}}, author = {{Doert, Thomas and Fokwa, Boniface Polequin Tsinde and Simon, Paul and Lidin, Sven and Söhnel, Tilo}}, issn = {{0947-6539}}, keywords = {{Charge-density wave; Electron holography; Lanthanides; Polychalcogenides; Solid-state structure}}, language = {{eng}}, month = {{12}}, number = {{23}}, pages = {{5865--5872}}, publisher = {{Wiley-Blackwell}}, series = {{Chemistry - A European Journal}}, title = {{LaSeTe<sub>2</sub> - Temperature Dependent Structure Investigation and Electron Holography on a Charge-Density-Wave-Hosting Compound}}, url = {{http://dx.doi.org/10.1002/chem.200305148}}, doi = {{10.1002/chem.200305148}}, volume = {{9}}, year = {{2003}}, }