Zobrazeno 1 - 10
of 119
pro vyhledávání: '"W. F. Peck"'
Publikováno v:
Il Nuovo Cimento D. 19:1093-1101
The crystal structure of Y0.95Ca0.05CuO2.54(1) has been determined by neutron powder diffraction at room temperature. The compound crystallizes with the symmetry of the hexagonal space group P63/m and lattice parameters a=6.1991(2), c=11.2059(3) A. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb3235a8352f261bbbcdc6334fed6333
https://doi.org/10.1007/bf03185396
https://doi.org/10.1007/bf03185396
Autor:
W. F. Peck, Hidenori Takagi, J. J. Krajewski, Akira Ohno, Hiroshi Yasuoka, Robert J. Cava, Kenji Ikushima
Publikováno v:
Journal of the Physical Society of Japan. 66:1130-1137
The 61 Ni spin-lattice relaxation rate, 6l Ti 1 -1 , and the Knight shift of a 91% 61 Ni enriched sample of LuNi 2 B 2 C have been measured in the normal state. It was found that 61 (T 1 T) -1 shows a Curie-Weiss like behavior, while the Knight shift
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dcbc3866c65c789c7872da12cebe25b2
https://doi.org/10.1143/jpsj.66.1130
https://doi.org/10.1143/jpsj.66.1130
Publikováno v:
Journal of Materials Research. 12:526-530
The results of measurements of dielectric constants, in the vicinity of ambient temperature, are presented for eight barium titanium niobium oxides (BaTi1+2nNb4O13+4n for n = 0, 1, 2, 3, 4; Ba3Ti4Nb4O21, Ba3Ti5Nb6O28, and Ba6Ti2Nb8O30) in polycrystal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50050278706ede35513a76ece07f695d
https://doi.org/10.1557/jmr.1997.0075
https://doi.org/10.1557/jmr.1997.0075
Autor:
J. J. Krajewski, Robert J. Cava, W. F. Peck, Qingzhen Huang, Bryan C. Chakoumakos, Jeffrey W. Lynn, A. Santoro
Publikováno v:
Physica C: Superconductivity. 271:311-318
The nuclear and magnetic structures of HoNi 1.985 Co 0.015 B 2 C and HoNiBC have been analyzed by neutron powder methods. The first of these materials crystallizes with the symmetry of space group I4/mmm, lattice parameters (at room temperature) a =
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::efed79e91d253626f19f040efbff71eb
https://doi.org/10.1016/s0921-4534(96)00532-1
https://doi.org/10.1016/s0921-4534(96)00532-1
Autor:
Takashi Mizokawa, J. J. Krajewski, Robert J. Cava, K. Mamiya, Hiroshi Eisaki, H. Takagi, S. Uchida, A. Fujimori, Akira Sekiyama, K. Kobayashi, W. F. Peck
Publikováno v:
Physical Review B. 54:507-514
We have studied the electronic structure of Ni borocarbides by means of photoemission and inverse-photoemission spectroscopy. The core-level and valence-band spectra of superconducting ${\mathrm{YNi}}_{2}$${\mathrm{B}}_{2}$C and nonsuperconducting ${
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6be394bd269ae3a72852f8fe512751e3
https://doi.org/10.1103/physrevb.54.507
https://doi.org/10.1103/physrevb.54.507
Publikováno v:
Journal of Materials Research. 11:1428-1432
The dielectric constants (K) have been measured near ambient temperature for polycrystalline bulk ceramics of the crystallographic shear compounds TiNb24O62, Ti2Nb10O29, and TiNb2O7. These show enhanced K's over Nb2O5 and TiO2, with the 2: 10:29 phas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d39487783393138b268127d2784e70e5
https://doi.org/10.1557/jmr.1996.0179
https://doi.org/10.1557/jmr.1996.0179
Publikováno v:
Materials Research Bulletin. 31:295-299
Nb2O5 in the high niobia structure type can accommodate approximately 25% partial substitution of Ta for Nb in a solid solution. Here we report the dielectric properties of polycrystalline ceramics of (Nb1 − xTax)2O5, 0.0 ≤ x ≤ 0.25, in the fre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fadfd5a2a8f1d4c639d2664ced2c55d6
https://doi.org/10.1016/0025-5408(96)00002-5
https://doi.org/10.1016/0025-5408(96)00002-5
Publikováno v:
Journal of Solid State Chemistry. 121:319-323
The 8-8-20 oxygen deficient perovskite occurs in the La–Sr–Cu–O chemical system near composition La 6.4 Sr 1.6 Cu 8 O 20 . Here we show that this structure can be stabilized in the La–Ca–Cu–Ni–O system based on the composition La 6.4 Ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d94164491a71700cfcf531f011b12af
https://doi.org/10.1006/jssc.1996.0043
https://doi.org/10.1006/jssc.1996.0043
Publikováno v:
Physical Review B. 53:802-808
Neutron-diffraction measurements have been carried out to investigate the magnetic properties of superconducting (${\mathit{T}}_{\mathit{c}}$\ensuremath{\sim}8 K) ${\mathrm{HoNi}}_{2}$${\mathrm{B}}_{2}$C and nonsuperconducting (${\mathit{T}}_{\mathit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::826bb6647a872f84acccf7a8c025534d
https://doi.org/10.1103/physrevb.53.802
https://doi.org/10.1103/physrevb.53.802
Autor:
Hendrik Willem Zandbergen, Sue A. Carter, W. F. Peck, Theo Siegrist, J. J. Krajewski, Robert J. Cava
Publikováno v:
Journal of Solid State Chemistry. 121:51-55
The syntheses of La5Cu19P12and Ce5Cu19P12are reported, as is the crystal structure of La5Cu19P12, determined by single crystal X-ray diffraction. The compounds are found to be of the Sc5Co19P12structure type. Both new materials are metallic, with the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77c018bef5c3e8de8e32393c4c40ad6c
https://doi.org/10.1006/jssc.1996.0007
https://doi.org/10.1006/jssc.1996.0007