Zobrazeno 1 - 10
of 41
pro vyhledávání: '"W. H. McCarroll"'
Autor:
J.D. Hettinger, Samuel E. Lofland, Somdev Tyagi, Patrick Gougeon, W. H. McCarroll, Kandalam V. Ramanujachary, Philippe Gall
Publikováno v:
Materials Research Bulletin. 42:1230-1241
Synthesis, structure and electronic properties are reported on single crystals of Sm{sub 4}Mo{sub 18}O{sub 32} and Nd{sub 4}Mo{sub 18}O{sub 32}. The triclinic crystal structure has three distinctly different Mo metal atom clusters (Mo{sub 2}, Mo{sub
Publikováno v:
Materials Science Forum. :63-68
Autor:
Vera N. Smolyaninova, Q. Q. Shu, W. H. McCarroll, F. A. Brown, Samuel E. Lofland, R. L. Greene, I. O. Troyanchuk, H. D. Drew, S. M. Bhagat, S. B. Ogale, Xuming Zhang, Ricardo S. Decca, Shankar I. Patil, Benjamin Palmer
Publikováno v:
Physical Review B. 62:9548-9554
We present systematic studies of polycrystalline La 1-x Sr x MnO 3 where x is varied from 0.46 to 0.53 at 0.01 intervals. We have measured the magnetic resonance, ac susceptibility, dc magnetization, x-ray diffraction, four-probe resistivity, and opt
Publikováno v:
Journal of Solid State Chemistry. 146:88-95
Crystals up to 4 mm on the edge of sodium-substituted lanthanum manganates with the rhombohedral perovskite structure have been grown for the first time using fused salt electrolysis at 980–1000°C. Cs 2 MoO 4 –MoO 3 mixtures have been employed a
Publikováno v:
Journal of Solid State Chemistry. 145:88-96
Crystals of Sr-doped perovskite lanthanum manganates, containing 7--34 mole percent Sr have been grown by fused salt electrolysis using Cs{sub 2}-MoO{sub 4}-MoO{sub 3} solvents in stabilized zirconia crucibles. The rhombohedral crystals grow with cub
Publikováno v:
Acta Crystallographica Section E Structure Reports Online. 63:i119-i121
Strontium lanthanum pentamolybdenum octaoxide, Sr0.44La0.56Mo5O8, belongs to the AMo5O8 structure type (A = Ca, Sr, Sn, Pb, Eu, La to Gd). Its crystal structure consists of bioctahedral Mo10O18 cluster units interconnected through Mo-Mo bonds of 2.73
Autor:
Subir K. Ray, Takashi Takahashi, W. H. McCarroll, Shuji Oishi, Martha Greenblatt, Anirban Chakraborty, Takafumi Sato, Seigo Souma, Hideki Matsui, Priya Mahadevan, D. D. Sarma, Satyabrata Raj, D. Hashimoto
Publikováno v:
Journal of Magnetism and Magnetic Materials. 310:e231-e233
We report high-resolution angle-resolved photoemission spectroscopy on sodium tungsten bronzes, Na x WO 3 , which exhibit a metal–insulator transition as a function of x . We found that the near- E F states are localized in Na x WO 3 ( x ⩽ 0.25 )
Autor:
Patrick Gougeon, W. H. McCarroll, Régis Gautier, M.-H. Whangbo, Hyung-Jun Koo, Martha Greenblatt, Jean-François Halet
Publikováno v:
Solid State Communications. 108:539-544
Electronic structures of AMo 5 O 8 (A=rare earth, alkaline earth) and the solid solution Sr 1− x La x Mo 5 O 8 ( x =0–1) were examined using the extended Huckel tight binding method. AMo 5 O 8 phases with divalent A cations (A=Sr, Ca, Eu) are nor
Autor:
M. Borgia, Patrick Gougeon, W. H. McCarroll, John E. Greedan, Kandalam V. Ramanujachary, Martha Greenblatt
Publikováno v:
Journal of Solid State Chemistry. 138:7-17
Single crystal and oriented polycrystal specimens of the solid solution between SrMo 5 O 8 and LaMo 5 O 8 have been prepared by fused salt electrolysis. The La/Sr ratios of the solid solution members formed are highly sensitive to the melt compositio
Publikováno v:
Journal of Solid State Chemistry. 136:322-327
The authors report here for the first time colossal magnetoresistance effects ({approximately}77% MR at 5 T) in bulk single crystals of self-doped La{sub 0.936}Mn{sub 0.982}O{sub 3} prepared by fused-salt electrolysis. The crystals form with rhombohe