Главная Новые поступления Описание Шлюз Z39.50

Базы данных


Труды сотрудников Института химии твердого тела УрО РАН - результаты поиска

Вид поиска

Область поиска
в найденном
 Найдено в других БД:Каталог книг и продолжающихся изданий (17)Каталог диссертаций и авторефератов диссертаций УрО РАН (10)Каталог препринтов УрО РАН (1975 г. - ) (2)Интеллектуальная собственность (статьи из периодики) (2)Труды Института высокотемпературной электрохимии УрО РАН (70)Труды сотрудников Института органического синтеза УрО РАН (169)Труды сотрудников Института теплофизики УрО РАН (74)Расплавы (35)Публикации Черешнева В.А. (29)Публикации Чарушина В.Н. (60)Каталог библиотеки ИЭРиЖ УрО РАН (2)Библиометрия (3)
Формат представления найденных документов:
полныйинформационныйкраткий
Отсортировать найденные документы по:
авторузаглавиюгоду изданиятипу документа
Поисковый запрос: (<.>K=Be<.>)
Общее количество найденных документов : 146
Показаны документы с 1 по 10
 1-10    11-20   21-30   31-40   41-50   51-60      
1.
Инвентарный номер: нет.
   
   M 70


    Milova, G. D.
    A method of calculating the solubility in cryolite [] / G. D. Milova, A. I. Gusev // Melts. - 1993. - January. - С. 398-401. - Bibliogr.: 14 ref.
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
РАСЧЕТЫ МАТЕМАТИЧЕСКИЕ -- МАТЕМАТИЧЕСКИЕ РАСЧЕТЫ -- РАСТВОРИМОСТЬ -- КРИОЛИТ -- ОКСИД ОЛОВА -- ОКСИД БЕРИЛЛИЯ -- ОКСИД АЛЮМИНИЯ -- Al -- СИСТЕМЫ ДВОЙНЫЕ -- Na -- Be -- Sn -- ДВОЙНЫЕ СИСТЕМЫ -- Al2O3-Na3AlF6 -- SnO2 -- BeO -- АЛЮМИНИЙ -- НАТРИЙ -- БЕРИЛЛИЙ -- ОЛОВО -- ФАЗОВЫЕ ДИАГРАММЫ -- ДИАГРАММЫ ФАЗОВЫЕ
Аннотация: The applicability of the method of quasiregular solution to calculating the solubility of oxides in cryolite is examined. For the Al2O3-Na3AlF6 system, the phase diagram is calculated in the temperature range 1200-1350 K. The results of calculations are presented for the solubility of SnO2 and BeO in cryolite

Найти похожие

2.
Инвентарный номер: нет.
   
   A 10


   
    A Novel Complex Cobalt Gallium Oxide Ca2Co0.8Ga1.2O4.8: Synthesis and High-Temperature Electron Transport Properties [] = A Novel Complex Cobalt Gallium Oxide Ca2Co0.8Ga1.2O4.8: Synthesis and High-Temperature Electron Transport Properties / S. Ya. Istomin, E. V. Antipov, G. Svensson, J. P. Attfield, V. L. Kozhevnikov, I. A. Leonidov, M. V. Patrakeev, E. B. Mitberg // Journal of Solid State Chemistry. - 2002. - V. 167, N 1. - С. 196-202 . - ISSN 0022-4596
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
СЛОЖНЫЕ ОКСИДЫ -- ОКСИДЫ СЛОЖНЫЕ -- ЭЛЕКТРОНЫ -- ДИФРАКЦИЯ -- ЭЛЕКТРОННЫЕ СВОЙСТВА -- СВОЙСТВА ЭЛЕКТРОННЫЕ -- ПОРОШКИ -- ОКСИД КОБАЛЬТА -- ОКСИД ГАЛЛИЯ -- СИНТЕЗ -- ПРОВОДИМОСТЬ -- ВЫСОКОТЕМПЕРАТУРНЫЕ СВОЙСТВА -- СВОЙСТВА ВЫСОКОТЕМПЕРАТУРНЫЕ -- ЭЛЕКТРИЧЕСКИЕ СВОЙСТВА -- СВОЙСТВА ЭЛЕКТРИЧЕСКИЕ -- Co -- Ga -- Ga -- КОБАЛЬТ -- ГАЛЛИЙ -- РЕНТГЕНОВСКАЯ ДИФРАКЦИЯ
Аннотация: A new complex oxide with the cation ratio Ca:Co:Ga = 2:0.8:1.2 has been synthesized in air at 1150oC. The cobalt atoms adopt oxidation states 2+ and 3+ in equal amounts giving an oxygen content corresponding to the composition Ca2Co0.8Ga1.2O4.8. It crystallizes in F-centered cubic structure with a = 15.0558 Angstrom. Conductivity measurements performed at high temperatures revealed that the temperature increase gives a charge disproportionation of Co3+ species resulting in a small concentration of Co4+ species and thus a small p-type conductivity in the oxide. A decrease of the oxygen pressure promotes oxygen depletion from the oxide and a deterioration of the conductivity. The electric properties are interpreted within a small polaron conduction mechanism. An unusually large mobility activation energy of 0.45 eV can be explained by a large spatial separation of cobalt cations in the structure

Найти похожие

3.
Инвентарный номер: нет.
   
   G 96


    Gusev, A. I.
    A sequence of transformations related to the formation of M3X2-type superstructures / A. I. Gusev // Journal of Experimental and Theoretical Physics. - 2015. - Vol. 120, № 1. - P91-96
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
M3X2 -- КАРБИД ВАНАДИЯ -- НЕСТЕХИОМЕТРИЯ -- НАНОСТРУКТУРА
Аннотация: A symmetry analysis of monoclinic, orthorhombic, and trigonal M3X2-type superstructures that can be formed in strongly stoichiometric MX y compounds with B1 structure is carried out. Channels of order-disorder transitions MX y → M3X2 are determined. It is shown that, as temperature decreases, two physically admissible sequences of transformations associated with the formation of M3X2 superstructures are possible in nonstoichiometric MX y compounds of group IV transition metals. By an example of vanadium carbide VC y , it is demonstrated that orthorhombic or monoclinic V3C2 superstructures can be obtained with the formation of a nanostructure.

Найти похожие

4.
Инвентарный номер: нет.
   
   A 62


   
    Antioxidants in carbon-bearing refractories / V. G. Bamburov, O. V. Sivtsova, V. P. Semyannikov, V. A. Kiselev // Refractories and Industrial Ceramics. - 2000. - Vol. 41, № 2. - P33-36 : il. - Bibliogr. : p. 36 (6 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
АНТИОКСИДАНТЫ -- ТУГОПЛАВКИЕ КАРБИДЫ
Аннотация: A study of boron-bcaring additives to periclase-carbon refractories is described. The special features of their oxidation and phase formation in heating ofpericlase-carbon compositions are investigated. It is shown that some of them can be used successfully as an antioxidant component that improves the operational characteristics of periclase-carbon ceramics. It is shown that the imported antioxidant boron-2000 is analogous to amorphous-boron (95 - 85%) preparations, and the latter are recommended for the creation of domestic grades of thermally stable periclase-carbon refractories

Полный текст
Найти похожие

5.
Инвентарный номер: нет.
   
   P 97


    Pupyshev, A. A.
    Application of negative ions in inductively coupledplasma-mass spectrometry / A. A. Pupyshev, V. T. Surikov // Spectrochimica Acta B. - 2004. - Vol. 59. - P. 1021-1031 : il. - Bibliogr. : p. 1030-1031 (34 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
СПЕКТРОМЕТРИЯ ПЛАЗМЕННАЯ -- ТЕРМОДИНАМИКА -- ИОНЫ ОТРИЦАТЕЛЬНЫЕ
Аннотация: The efficiency of the formation of negative background and F(-), Cl(-), Br(-) and I(-) ions in inductively coupled plasma (ICP) was investigated at temperatures ranging from 4000 to 9000 K using thermodynamic simulation. It was shown that the basic negative background ions in ICP, O(-), H(-), OH(-) and probably Ar(-), are in accordance with experiment. The estimated total concentration of negative ions in ICP was found to be four to five orders of magnitude smaller than that of positive ions. The highest efficiency of negative ion formation should be observed for elements having high electron affinity, namely Cl, F, Br and I. However, the detection sensitivity in the negative ion detection mode may be increased slightly as compared with the positive ion detection mode only for fluorine in the temperature range 6000–7000 K. This is in contradiction with experimental results and may be explained by the formation of negative ions behind the skimmer and/or smaller losses of negative ions in the ion beam at low ionic current. The relationship between the efficiency of negative atomic ion formation and electron affinity was determined. This makes it possible to estimate numerically the efficiency of the formation of Ar(-), Na(-) and other negative atomic ions in the ICP. The calculations performed confirmed the experimental data showing that the cation (Ba, Co, Cu, K, Na and Sr) introduced as a chloride does not affect the analytical signal of Cl(-). According to the calculations, high contents of halogens in samples are not expected to alter significantly the contents of F(-), Cl(-), Br(-) and I(-) measured in ICP as analytes. The experimentally observed significant suppression effect of high halogen concentrations may be caused by a shift of equilibrium in reactions of electron addition to halogen atoms behind the skimmer and/or increased negative ion current in the ion beam and accordingly greater losses of analytes

Полный текст
Найти похожие

6.
Инвентарный номер: нет.
   
   E 58


    Enyashin, A. N.
    Atomic Defects of the Walls and the Electronic Structure of Molybdenum Disulfide Nanotubes / A. N. Enyashin, A. L. Ivanovskii // Semiconductors. - 2007. - Vol. 41, № 1. - P81-86 : il. - Bibliogr. : p. 86 (17 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ДИСУЛЬФИД МОЛИБДЕНА -- НАНОТРУБКИ
Аннотация: The method of the charge-density functional in the tight-binding approximation is used to study the effect of different types of wall atomic defects in the MoS2 nanotubes on their structural and electronic properties. It is shown that the atomic defects in the walls of the MoS2 nanotubes can be responsible for the semiconductor–metal transitions

Полный текст
Найти похожие

7.
Инвентарный номер: нет.
   
   S 53


    Shein, I. R.
    Atomic models of non-stoichiometric layered diborides M1?xB2 (M = Mg, Al, Zr and Nb) from first principles / I. R. Shein, A. L. Ivanovskii // Physica C. - 2008. - Vol. 468. - P. 2224-2228 : il. - Bibliogr. : p. 2228 (43 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ДИБОРИДЫ МЕТАЛЛОВ -- НЕСТЕХИОМЕТРИЯ -- СВОЙСТВА ЭЛЕКТРОННЫЕ
Аннотация: Two atomic models of non-stoichiometric metal diborides M1-xB2 are now assumed: (i) the presence of cation vacancies and (ii) the presence of "super-stoichiometric" boron which is placed in cation vacancy site. We have performed first principle total energy calculations using the VASP-PAW method with the generalized gradient approximation (GGA) for the exchange-correlation potential in a perspective to reveal the trends of their possible stable atomic configurations depending on the type of M cations (M = Mg, Al, Zr or Nb) and the type of the defects (metal vacancies versus metal vacancies occupied by??"super-stoichiometric"boron in forms of single atoms, dimers B2 or trimers B3). Besides we have estimated the stability of these non-stoichiometric states (on the example of magnesium–boron system) as depending on the possible synthetic routes, namely via solid-state reaction method, as well as in reactions between solid boron and Mg vapor; and between these reagents in gaseous phase. We demonstrate that the non-stoichiometric states such as B2 and B3 placed in metal sites may be stabilized, while the occupation of vacancy sites by single boron atoms is the most unfavorable

Полный текст
Найти похожие

8.
Инвентарный номер: нет.
   
   S 53


    Shein, I. R.
    Atomic models of non-stoichiometric layered diboridesM1-xB2 (M = Mg, Al, Zr and Nb) from first principles / I. R. Shein, A. L. Ivanovskii // arXiv.org, e-Print Archive, Condensed Matter. - 2008. - 15 pp. - Bibliogr. : p. 14-15 (43 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
МОДЕЛИРОВАНИЕ -- НЕСТЕХИОМЕТРИЯ -- ДИБОРИДЫ МЕТАЛЛОВ -- СВОЙСТВА ЭЛЕКТРОННЫЕ
Аннотация: Two atomic models of non-stoichiometric metal diborides M1-xB2 are now assumed: (i) thepresence of cation vacancies and (ii) the presence of “super-stoichiometric” boron which is placed in cation vacancy site. We have performed first principle total energy calculations using the VASP-PAW method with the generalized gradient approximation (GGA) for the exchangecorrelation potential in a perspective to reveal the trends of their possible stable atomic configurations depending on the type of M cations (M = Mg, Al, Zr or Nb) and the type of the defects (metal vacancies versus metal vacancies occupied by “super-stoichiometric” boron in forms of single atoms, dimers B2 or trimers B3). Besides we have estimated the stability of these non-stoichiometric states (on the example of magnesium-boron system) as depending on the possible synthetic routes, namely via solid state reaction method, as well as in reactions between solid boron and Mg vapor; and between these reagents in gaseous phase. We demonstrate that the non-stoichiometric states such as B2 and B3 placed in metal sites may be stabilized, while the occupation of vacancy sites by single boron atoms is the most unfavorable

Полный текст
Найти похожие

9.
Инвентарный номер: нет.
   
   I-98


    Ivanovskaya, V. V.
    Atomic Structure, Electronic Properties, and Thermal Stability of Diamond-like Nanowires and Nanotubes / V. V. Ivanovskaya, A. L. Ivanovskii // Inorganic Materials. - 2007. - Vol. 43, № 4. - P. 349-357 : il. - Bibliogr. : p. 356-357 (41 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
АТОМНАЯ СТРУКТУРА -- СВОЙСТВА ЭЛЕКТРОННЫЕ -- СВОЙСТВА ТЕРМИЧЕСКИЕ -- НАНОВОЛОКНА АЛМАЗОПОДОБНЫЕ -- НАНОТРУБКИ
Аннотация: Density functional tight-binding calculations are used to investigate the structure, electronic properties, energy stability, and thermal behavior (0–1500 K) of extended monolithic (nanowires) and hollow (nanotubes) diamond-like carbon nanostructures. The results indicate that diamond-like nanowires and nanotubes may be both metallic and semiconducting, depending on their morphology and size. A new type of hybrid (sp3+sp2) nanostructure is identified, which has the form of a monolithic diamond-like (sp3) wire inside a graphite-like (sp2) shell. Diamond-like nanowires are shown to be more stable than nanotubes of comparable size

Полный текст
Найти похожие

10.
Инвентарный номер: нет.
   
   K 93


    Kurlov, A. S.
    Atomic-vacancy ordering in the lowest tungsten carbide W2C [Текст] / A. S. Kurlov, A. I. Gusev // Journal of Experimental and Theoretical Physics. - 2007. - Vol. 105, № 4. - С. 710-721. - Библиогр. : с. 721 (22 назв.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
АТОМНО-ВАКАНСИОННОЕ УПОРЯДОЧЕНИЕ -- КАРБИД ВОЛЬФРАМА
Аннотация: Atomic–vacancy ordering in the lowest tungsten carbide W2C with an L'3-type basic hexagonal structure has been studied by neutron diffraction and X-ray diffraction. In the temperature range 2700–1370 K, the only ordered phase of the lowest tungsten carbide is shown to be the trigonal ε-W2C phase (space group P1m). This trigonal ε-W2 C phase is found to form via a disorder–order phase transition channel, which includes three superstructure vectors (k15(1), k15(2), k17(1) ) of two Lifshitz stars ({k15}, {k17}, and to be described by two long-range order parameters (η15,η17). The distribution function of carbon atoms in the trigonal ε-W2C superstructure is calculated, and the orresponding region of the allowable values of the long-range order parameters η15 and η17 is found. Symmetry analysis of other possible superstructures of the lowest tungsten carbide W2C is performed, and the physically acceptable sequence of phase transformations in W2 C is determined

Полный текст
Найти похожие

 1-10    11-20   21-30   31-40   41-50   51-60      
 

Сиглы отделов ЦНБ УрО РАН


  бр.ф. - Бронированный фонд

  бф - Научно-библиографический отдел

  БХЛ - Фонд художественной литературы

  ИИиА -Фонд исторической литературы в ЦНБ УрО РАН

  ИМЕТ -Отдел ЦНБ в Институте металлургии УрО РАН

  кх - Отдел фондов (книгохранениe)

  МБА - Межбиблиотечный абонемент

  мф - Методический фонд

  ок - Отдел научной каталогизации

  оку - Отдел комплектования и учета

  орф - Обменно-резервный фонд

  пф - Читальный зал деловой и патентной информации

  рк - Фонд редкой книги

  ч/з - Главный читальный зал

  эр - Зал электронных ресурсов

  

Сиглы библиотек институтов и НЦ УрО РАН
© Международная Ассоциация пользователей и разработчиков электронных библиотек и новых информационных технологий
(Ассоциация ЭБНИТ)
Яндекс.Метрика