Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Klaas Derk Bronsema"'
Autor:
D. Grebille, Klaas Derk Bronsema, S. van Smaalen, Francine Queyroux, J.F. Berar, Monique Nanot, Jean-Claude Gilles
Publikováno v:
Materials Research Bulletin. 22:253-260
The structure of the incommensurate modulated compound (Nd4Ca2)Ti6O20 has been analyzed on the basis of a four-dimensional description in the space group or S(1–2)2mc+e4 (a=3.832A, b=36.64A, c=5.436A, q∗=0.49a∗, Z=2). The modulation involves ro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a80ee647519e028ed8fb94c038834a80
https://doi.org/10.1016/0025-5408(87)90078-x
https://doi.org/10.1016/0025-5408(87)90078-x
Publikováno v:
Physical Review Letters. 55:1188-1191
NbTe 4 presente une transition de phase du type lock-in vers 50 K. La microscopie electronique revele des discommensurations dont on etudie l'evolution thermique. On propose un modele de microstructure dans lequel le dephasage cooperatif entre segmen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd78982df3f5373458bc1c3eda6662ae
https://doi.org/10.1103/physrevlett.55.1188
https://doi.org/10.1103/physrevlett.55.1188
One-, Two-, and Three-Dimensional Order in and Four-Dimensional Description of KxV5S8 (0.5 ≦x ≦ 0.7)
Autor:
Klaas Derk Bronsema, J Mahy
Publikováno v:
Physica Status Solidi (a). 104:603-618
The C-centered monoclinic (average) structure of KxV5S8 (0.5 ≦ x ≦ 0.7) is characterized by a three-dimensional V5S8 framework with channels containing the K atoms. For K0.5V5S8 at room temperature a superstructure is found due to ordering of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de280487132cffdd297730b4e863aa58
https://doi.org/10.1002/pssa.2211040211
https://doi.org/10.1002/pssa.2211040211
Publikováno v:
Materials Research Bulletin. 19:555-562
The crystal structures of the potassium vanadium sulphides K0.7V5S8 and K0.5V5S8 (=KV10S16) have been determined. K0.7V5S8 has a C-centered monoclinic unit cell of dimensions a=17.499(3) A, b=3.2986(6) A, c=8.489(1) A, s=103.98(1)°, spacegroup C2/m;
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c06d2b2202b36dc77504778213f02f35
https://doi.org/10.1016/0025-5408(84)90122-3
https://doi.org/10.1016/0025-5408(84)90122-3
Publikováno v:
Journal of Solid State Chemistry. 67:9-20
Ag 0.35 TiS 2 shows a second-order phase transition with T c = 298.0 K from a a √3 × a √3 × 2 c superstructure, space group P 3 1c , to a disordered Cd(OH) 2 NiAs intermediate structure with unit cell a × a × c and space group P 3 m1 . In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6131b80ba9fb78ac893b0112d068c986
https://doi.org/10.1016/0022-4596(87)90332-x
https://doi.org/10.1016/0022-4596(87)90332-x
Publikováno v:
Acta Crystallographica Section B: Structural Science, 42, 43-50
ResearcherID
ResearcherID
A complete analysis of the modulated structure of NbTe4 is presented, using the newly developed formalism of de Wolff [Acta Cryst. (1974). A30, 777-785] and Yamamoto [Acta Cryst. (1982). A38, 87-92]. The diffraction pattern was measured at room tempe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::67dfcfb925687325bf935c11a078abab
https://doi.org/10.1107/s0108768186098609
https://doi.org/10.1107/s0108768186098609
Publikováno v:
ResearcherID
Acta Crystallographica Section B: Structural Science, 43, 305-313
Acta Crystallographica Section B: Structural Science, 43, 305-313
Determination de la structure modulee incommensurablement de TaTe 4 par diffraction RX sur la base d'une surmaille 2a×2a×3c. Le groupe d'espace de la sousmaille est P4/mcc, celui de la surmaille P4/ncc. Affinement de la structure jusqu'a 0,064. La
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f7144c18ec2a2d6fbbbfed5492f7b890
https://doi.org/10.1107/S0108768187097805
https://doi.org/10.1107/S0108768187097805
Publikováno v:
Chemischer Informationsdienst. 14
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1537a9fcbcaf0834391059974ff842eb
https://doi.org/10.1002/chin.198310001
https://doi.org/10.1002/chin.198310001
Autor:
Klaas Derk Bronsema, Ga Wiegers
Publikováno v:
Acta Crystallographica Section B: Structural Science, 38, 2229-2232
Ag0.37Crr21S2, rhombohedral, R3m, a = 3.4325 (1), c =- 37.190 (1) A (in hexagonal setting), Z = 6. The structure was determinined using singlecrystalX-ray data from 908 independent reflections; the least-squares refinement of the positional and therm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8911ad432c91a50b9f84e359657aa4c5
https://research.rug.nl/en/publications/6c037286-0408-4e6f-b878-dada372ce5b8
https://research.rug.nl/en/publications/6c037286-0408-4e6f-b878-dada372ce5b8
Publikováno v:
Acta Crystallographica Section A Foundations of Crystallography. 40:C331-C331
Vanadium ditelluride, V1.04Te2, has a Cd(OH)2-type structure with unit cell dimensions ah = 3.638 A and ch = 6.582 A above the transition temperature Tt of 482 K. Below Tt the structure is monoclinic, space group C2 m , with cell dimensions am = 18.9
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bac723af561e2db70bdcb443c08eef5a
https://doi.org/10.1107/s010876738409022x
https://doi.org/10.1107/s010876738409022x