Zobrazeno 1 - 10
of 27
pro vyhledávání: '"V A, Sapre"'
Publikováno v:
physica status solidi (b). 190:487-491
The XANES region of the L II and L III absorption discontinuities of some rare earths in their oxides and cuprates is studied. The main absorption peak and the peak adjacent to it are attributed to the transitions of electrons from the inner L levels
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f05b90cef6f18f3ec6fe46c8efe4d1b
https://doi.org/10.1002/pssb.2221900218
https://doi.org/10.1002/pssb.2221900218
Publikováno v:
Pramana. 41:473-477
An inexpensive and simple demountable X-ray source, having facilities to excite X-rays either by bombardment of a target by electrons or by fluorescence, has been developed using a stainless steel chamber having six ports. A cathode assembly from a b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89ee4ab323e11fdce05c7ed291d761ef
https://doi.org/10.1007/bf02847453
https://doi.org/10.1007/bf02847453
Publikováno v:
Bulletin of Materials Science. 16:243-253
In oxidic spinels containing transition metal ions, the tetrahedral and octahedral bond distances differ by less than 0·25 A. Therefore, in the case of a cation occupying both the sites, the normalized EXAFS for first coordination shell gives the av
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7236317c6970616dd97d1be1d7d8a66
https://doi.org/10.1007/bf02746033
https://doi.org/10.1007/bf02746033
Publikováno v:
Bulletin of Materials Science. 15:121-125
An empirical relation between lattice parameter and cationic radii for cubic spinels has been established by considering the packing of anions in non-ideal situation and ionic displacement parameter (δ =u−3/8). This relation gives the value ofa, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ecb494e11e81e3b5e87762d1d0757f6
https://doi.org/10.1007/bf02927436
https://doi.org/10.1007/bf02927436
Publikováno v:
Physica Status Solidi (a). 124:K133-K136
Etude du spectre d'absorption K du cuivre dans YBa 2 Cu 3 O 7 avec un spectrographe de Cauchoir equipe d'un cristal de silicium. La courbe d'absorption de Cu 2 O est decomposee en deux composantes, celle de CuO en trois composantes, de meme que YBa 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::638d00f2d8dd2aa51db11a5be8b1ced8
https://doi.org/10.1002/pssa.2211240237
https://doi.org/10.1002/pssa.2211240237
Publikováno v:
Journal of Physics and Chemistry of Solids. 52:921-925
The L absorption spectra of tungsten in the pure metal, in the oxide WO 3 and some tungstates RE 2 (WO 4 ) 3 (where RE = La, Ce, Nd, Sm, Gd and Dy) have been studied employing a 0.4m Cauchois type bent crystal spectrograph. The tungsten l i edge comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb682b5057a7ff80a4838acca963e784
https://doi.org/10.1016/0022-3697(91)90016-s
https://doi.org/10.1016/0022-3697(91)90016-s
Publikováno v:
Measurement Science and Technology. 1:1250-1253
The authors have studied the copper K absorption discontinuity in the metal and its oxides using a Cauchois-type bent crystal X-ray spectrograph equipped with a silicon crystal, along with a conventional X-ray source. The performance of the silicon c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e3e78dc6183b0b03032668291e1e931
https://doi.org/10.1088/0957-0233/1/11/020
https://doi.org/10.1088/0957-0233/1/11/020
Publikováno v:
physica status solidi (b). 161:891-896
The intensities are studied of the white lines associated with the LII and LIII absorption discontinuities of the rare earth elements in their oxides RE2O3 (RE = La, Ce, Pr, Nd, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu) and some tungstates RE2(WO4)3 (RE
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75663fc973c4ae40adfe1f117ccc6424
https://doi.org/10.1002/pssb.2221610244
https://doi.org/10.1002/pssb.2221610244
Autor:
Nitin V. Moghe, V. B. Sapre
Publikováno v:
X-Ray Spectrometry. 24:241-243
A method for curve fitting was used to study and compare the variation in the density of state responsible for the occurrence of the white line associated with the L II and L III absorption discontinuities of rare earths in their oxides and cuprates.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be10a04ae7f9fe6754bc7e7c8f475a93
https://doi.org/10.1002/xrs.1300240505
https://doi.org/10.1002/xrs.1300240505
Publikováno v:
Measurement Science and Technology. 3:557-559
Several laboratories are using microdensitometer records to analyse the photographically recorded X-ray absorption spectrum. The design of a computerized microdensitometer, along with its advantages over a conventional recording system are discussed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78cf0c0a71d13ea59eb49f580bd416e0
https://doi.org/10.1088/0957-0233/3/5/019
https://doi.org/10.1088/0957-0233/3/5/019