... hydrothermally synthesized alkaline earth-copper-selenites were determined: BaCu(SeO3)2-I [a = 5.247(1), b = ... Z = 4, Rw = 0.024 for 1270 reflections], BaCu(SeO3)2-II [a = 5.256(1), b = ... Z = 4, Rw = 0.046 for 2238 reflections], BaCu(SeO3)2-III [a = 8.031(1), b = ... Rw = 0.028 for 1414 reflections; isotypic with BaCu(SeO3)2-III]. BaCu(SeO3)2-I and -II contain Cu(SeO3) ... selenite groups. These sheets are topologically different: in BaCu(SeO3)2-I they are formed by the ... SeO3) and Cu6(SeO3)4 rings while in BaCu(SeO3)2-II they are formed by Cu2( ...
Tópico(s): Trace Elements in Health
1987 - Elsevier BV | Journal of Solid State Chemistry
Min‐Han Kim, Jong‐Bong Lim, Jae‐Chul Kim, Sahn Nahm, Jong‐Hoo Paik, Jonghee Kim, Kyeongsoon Park,
BaCu(B 2 O 5 ) ceramics were synthesized and their microwave dielectric properties were investigated. BaCu(B 2 O 5 ) phase was formed at 700°C and melted above 850°C. The BaCu(B 2 O 5 ) ceramic sintered at 810° ... τ f ) of −32 ppm/°C. As the BaCu(B 2 O 5 ) ceramic had a low ... for low temperature co‐fired ceramic application. When BaCu(B 2 O 5 ) was added to the ... ceramics were well sintered even at 850°C. BaCu(B 2 O 5 ) existed as a liquid ... were obtained for the BZN+6.0 mol% BaCu(B 2 O 5 ) ceramic sintered at 875° ...
Tópico(s): Dielectric properties of ceramics
2006 - Wiley | Journal of the American Ceramic Society
Yongjun Gu, Li-wei Lei, Jinliang Huang, Xinghua Yang, Qian Li, Lihua Li, Xinli Li, Bok‐Hee Kim,
BaCu(B2O5) is a typical microwave dielectric ceramic (MDC) with a low sintering temperature, but it exhibits ... the densification and the microwave dielectric properties of BaCu(B2O5). Here we show that BaCu(B2O5) can be well-sintered at 825 °C ... TiO2 grains homogeneously distribute in the boundaries of BaCu(B2O5) grains, resulting in the τf compensation of BaCu(B2O5). Enhanced temperature-stability of resonant-frequency can ... TiO2 properly. A novel temperature-stable (1-x)BaCu(B2O5)–xTiO2 (x = 0.20) MDC (τf =−0. ...
Tópico(s): Dielectric properties of ceramics
2018 - Elsevier BV | Journal of the European Ceramic Society
Mi Xiao, Qingqing Gu, Ziqi Zhou, Ping Zhang,
In this paper, LaNbO4 ceramics with BaCu(B2O5) additives were prepared via the conventional solid state reaction method. The effects of BaCu(B2O5) on sintering behavior, phase structure and microwave ... C to 925 °C with the addition of BaCu(B2O5) due to liquid phase sintering. X-ray ... that single-phase LaNbO4 could be achieved when BaCu(B2O5) content is ≤ 1 wt%. However, with further increase in BaCu(B2O5) content, small amount of second phases such ... by additives. Typically, LaNbO4 ceramics with 1 wt% BaCu(B2O5) sintered at 925 °C for 4 h ...
Tópico(s): Layered Double Hydroxides Synthesis and Applications
2017 - Elsevier BV | Journal of Alloys and Compounds
Shangfei Wu, P. Richard, Ambroise van Roekeghem, Simin Nie, H. Miao, Nan Xu, Tian Qian, Bayrammurad Saparov, Z. Fang, Silke Biermann, Athena S. Sefat, Hong Ding,
... the band dispersion and the Fermi surface of BaCu$_2$As$_2$ and $\alpha$-BaCu$_2$Sb$_2$. While the Cu $3d$ bands ... three-dimensionality in the measured band structure of BaCu$_2$As$_2$ indicate a surface state likely ... of Cu states at similar energy in $\alpha$-BaCu$_2$Sb$_2$ without the pnictide-pnictide interlayer ... phase suggests that the short interlayer distance in BaCu$_2$As$_2$ follows from the stability of ... way around. Our results confirm the prediction that BaCu$_2$As$_2$ is an $sp$ metal with ...
Tópico(s): Rare-earth and actinide compounds
2015 - American Physical Society | Physical Review B
I. Pilchowski, Albrecht Mewis, M. Wenzel, R. Gruehn,
Abstract BaCu 8 P 4 und BaCu 8 As 4 wurden durch Erhitzen der Elemente dargestellt; beide Verbindungen kristallisieren tetragonal‐innenzentriert (RG I4/m) mit den Gitterkonstanten: BaCu 8 P 4 : a = 10,192(2) Å, c = 3,878(1) Å; BaCu 8 As 4 : a = 10,455(2) Å, ... kleinerem Querschnitt unendliche Ketten kantenverknüpfter Cu‐Tetraeder ziehen. BaCu 8 P 4 wurde als erstes ternäres Phosphid ...
Tópico(s): Physics of Superconductivity and Magnetism
1990 - Wiley | Zeitschrift für anorganische und allgemeine Chemie
Yongjun Gu, Chao Li, Jinliang Huang, Li Qian, Lihua Li, Xinli Li,
... 25TiO3 (abbreviated CLSNT) ceramics with different amounts of BaCu(B2O5) addition were investigated in this paper. Adding BaCu(B2O5) to CLSNT lowered its sintering temperature from ... confirmed. The CLSNT ceramics with small amounts of BaCu(B2O5) addition could be well sintered at 925 ° ... microwave dielectric properties. Especially, the 1.75 wt.% BaCu(B2O5)-doped CLSNT ceramic sample sintered at 925 ° ... a promising candidate material for LTCC applications. Obviously, BaCu(B2O5) could be a suitable sintering aid to ...
Tópico(s): Dielectric properties of ceramics
2017 - Elsevier BV | Journal of the European Ceramic Society
Bin Tang, Guodong Xia, Shengquan Yu, Zixuan Fang, Shuren Zhang,
The effect of BaCu(B2O5) (BCB2) addition on the shrinking process and microwave dielectric properties of 0.85BaTi4O9–0.15BaZn2Ti4O11 (BZT) ceramics were ... by the conventional solid-state ceramic route. Adding BaCu(B2O5) into 0.85BaTi4O9–0.15BaZn2Ti4O11 ceramics led ... 2. The densification of the 5–15 wt% BaCu(B2O5) + BaTi4O9–BaZn2Ti4O11 ceramics sintered at approximate 900 ° ... phase sintering mechanism formed by the meltdown of BaCu(B2O5). The addition of BaCu(B2O5) also increased the shrinkage rate and promoted ...
Tópico(s): Advanced ceramic materials synthesis
2015 - Elsevier BV | Materials Research Bulletin
Xin Tang, Hui Yang, Qilong Zhang, Juehui Zhou,
The effects of BaCu(B2O5) doping on the phase structure, sintering characteristics and microwave dielectric properties of ZnZrNb2O8 ceramics were investigated. Only a single-phase, i.e. ZnZrNb2O8 is formed when BaCu(B2O5) content is ≤3 wt%. Small amount of ... in second phases occurred with further increase in BaCu(B2O5) content. The addition of BaCu(B2O5) can effectively lower the sintering temperature of ... liquid phase sintering. ZnZrNb2O8 ceramics with 3 wt% BaCu(B2O5) sintered at 950 °C for 4 h ...
Tópico(s): Multiferroics and related materials
2014 - Elsevier BV | Ceramics International
Rui-Long Jia, Hua Su, Xiaoli Tang, Yulan Jing,
The effects of BaCu(B2O5) (BCB) addition on the microstructure, phase formation, and microwave dielectric properties of Ba5Nb4O15−BaWO4 ceramic are investigated. As a sintering aid, BaCu(B2O5) ceramic could effectively lower the sintering temperature ... C due to the liquid-phase effect. Meanwhile, BaCu(B2O5) addition effectively improves the densification of Ba5Nb4O15− ... and BaWO4 coexist with no crystal phase of BaCu(B2O5) in the sintered ceramics. The Ba5Nb4O15−BaWO4 ceramics with 1.0 wt% BaCu(B2O5) sintered at 950 °C for 2 h ...
Tópico(s): Multiferroics and related materials
2014 - IOP Publishing | Chinese Physics B
The effects of BaCu(B2O5) additives on the sintering temperature and microwave dielectric properties of (Mg0.7Zn0.3)0.95Co0.05TiO3 ceramics were ... to be sintered below 1000 °C. However, when BaCu(B2O5) were added, they were sintered below 1000 ° ... that a liquid phase with the composition of BaCu(B2O5) was formed during the sintering and assisted ... 3)0.95Co0.05TiO3 ceramics at low temperature. BaCu(B2O5) powders were produced and used to reduce ... 0.95Co0.05TiO3 ceramics containing 7 wt.% mol% BaCu(B2O5) sintered at 950 °C for 4 h.
Tópico(s): Dielectric properties of ceramics
2011 - Elsevier BV | Journal of Alloys and Compounds
Mohamed Oudah, Katja M. Kleinke, Holger Kleinke,
... and the low thermal conductivity of cold-pressed BaCu(5.7)Se(0.6)Te(6.4), ... the thermoelectric properties of hot-pressed pellets of BaCu(5.9)STe(6) and BaCu(5.9)SeTe(6). Both materials exhibit a ...
Tópico(s): Magnetic and transport properties of perovskites and related materials
2014 - American Chemical Society | Inorganic Chemistry
Fei-fei Gu, Guohua Chen, Changlai Yuan, Changrong Zhou, Tao Yang, Yun Yang,
... 0.8Li0.5Sm0.5TiO3 (CST–LST) ceramics by BaCu (B2O5) addition and TiO2 dopant were prepared via ... microstructure, and dielectric properties were investigated. Addition of BaCu (B2O5) lowered the firing temperature about 300 °C. The CST–LST ceramics with 5 wt% BaCu(B2O5) sintered at 950 °C exhibited single phase ... microwave properties. Typically, the CST–LST + 5 wt% BaCu(B2O5) + 1.5 wt% TiO2 sintered at 950 ° ...
Tópico(s): Dielectric properties of ceramics
2014 - Elsevier BV | Materials Research Bulletin
Oottil Mayasree, Cheriyedath Raj Sankar, Yanjie Cui, Abdeljalil Assoud, Holger Kleinke,
Abstract BaCu 6– x STe 6 and BaCu 6– x Se 1– y Te 6+ y were synthesized from the elements at 663 K. These chalcogenides adopt a new structure type, ... 6.9680(2) Å in the case of BaCu 5.93 SeTe 6 . Therein, the Cu atoms ... 2 2– pairs. Band structure calculations on different BaCu 6 SeTe 6 models revealed a very small ... p ‐doped semiconductors, which we experimentally confirmed for BaCu 5.7 Se 0.6 Te 6.4 .
Tópico(s): Chalcogenide Semiconductor Thin Films
2011 - Wiley | European Journal of Inorganic Chemistry
Yongjun Gu, Jinliang Huang, Ying Wang, Daoming Sun, Li Qian, Feilong Li, Hui Xu,
... 63TiO2 (abbreviated CLST) ceramics with different amounts of BaCu(B2O5) (abbreviated BCB) addition were investigated in this ... The CLST ceramics doped by small amounts of BaCu(B2O5) could be well sintered at 1050 ∘C ... possesses good dielectric properties. Especially, the 4 wt% BaCu(B2O5)-doped CLST ceramics sintered at 1050 ∘C ... Kr=81.4 and tanδ=0.0212. Obviously, BaCu(B2O5) could be used as a suitable sintering ...
Tópico(s): Dielectric properties of ceramics
2009 - Elsevier BV | Solid State Communications
Jong-Bong Lim, Young Hun Jeong, Noc-Huan Nguyen, Sahn Nahm, Jong‐Hoo Paik, Jong‐Hee Kim, Hwack-Joo Lee,
The effects of B2O3/CuO and BaCu(B2O5) additives on the sintering temperature and microwave dielectric properties of Ba2Ti9O20 ceramics were investigated. The B2O3 added Ba2Ti9O20 ceramics were not ... that a liquid phase with the composition of BaCu(B2O5) was formed during the sintering and assisted ... densification of the Ba2Ti9O20 ceramics at low temperature. BaCu(B2O5) powders were produced and used to reduce ... for the Ba2Ti9O20 ceramics containing 10.0 mol% BaCu(B2O5) sintered at 875 °C for 2 h.
Tópico(s): Dielectric properties of ceramics
2006 - Elsevier BV | Journal of the European Ceramic Society
Frank Herman, Robert V. Kasowski, William Y. Hsu,
Although ${\mathrm{La}}_{4}$${\mathrm{BaCu}}_{5}$${\mathrm{O}}_{13\mathrm{\ensuremath{-}}\mathrm{x}}$ is metallic and chemically and structurally similar to known high-${T}_{c}$ copper- ... Cu-O network of ${\mathrm{La}}_{4}$${\mathrm{BaCu}}_{5}$${\mathrm{O}}_{13\mathrm{\ensuremath{-}}\mathrm{x}}$ ... absence of superconductivity in ${\mathrm{La}}_{4}$${\mathrm{BaCu}}_{5}$${\mathrm{O}}_{13\mathrm{\ensuremath{-}}\mathrm{x}}$ ... a chance that stoichiometric ${\mathrm{La}}_{4}$${\mathrm{BaCu}}_{5}$${\mathrm{O}}_{13}$ could also be a ...
Tópico(s): Iron-based superconductors research
1988 - American Physical Society | Physical review. B, Condensed matter
Hiroto Yamamoto, Yuya Wakita, Toshiya Kitaoka, Kohei Fujishiro, Elly Kesumawati, Sota Koeda,
... and strains that were genetically distant from ToLCNDV-[BACu-20] in Southeast Asia, which were previously isolated ... Alm-Cuc-16] from Spain and of ToLCNDV-[BACu-20] from Indonesia were prepared, and ToLCNDV isolates ... consistently more severe in plants inoculated with ToLCNDV-[BACu-20] compared to plants inoculated with ToLCNDV-[ES- ... showed slight vein-yellowing symptoms. In contrast, ToLCNDV-[BACu-20] infection induced typical begomoviral disease symptoms of ...
Tópico(s): Insect-Plant Interactions and Control
2021 - Japanese Society for Horticultural Science | The Horticulture Journal
T. Shiroka, F. Eggenschwiler, H. R. Ott, J. Mesot,
... behavior in the presence of disorder. Starting from BaCu$_2$Si$_2$O$_7$, a typical spin- ... the disorder-related properties from the well-ordered BaCu$_2$Si$_2$O$_7$ to the maximally disordered BaCu$_2$SiGeO$_7$. Our data indicate that already ...
Tópico(s): Quantum and electron transport phenomena
2019 - American Physical Society | Physical review. B./Physical review. B
Mei Guo, Yuxia Li, Gang Dou, Shuping Gong,
... microwave dielectric properties of ZnNb2O6–xCaTiO3 ceramics with BaCu(B2O5) glass additions prepared by solid state reaction ... ZnNb2O6–xCaTiO3 (x = 8.0 wt.%) samples with BaCu(B2O5) glass additives sintered in 900–1000 °C ... with the sintering temperature and the amount of BaCu(B2O5) glass. The sintering temperature of the ceramics ... from 1175 °C. Addition of 5.0 wt.% BaCu(B2O5) glass in ZnNb2O6–xCaTiO3 (x = 8.0 ...
Tópico(s): Dielectric properties of ceramics
2014 - Elsevier BV | Materials Chemistry and Physics
Guohua Chen, Jin Liu, Xuqiong Li, Huarui Xu, Minhong Jiang, Changrong Zhou,
... purity, microstructure, sinterability and microwave dielectric properties of BaCu(B2O5)-added Li2ZnTi3O8 ceramics and their cofireability with Ag electrode were investigated. A small amount of BaCu (B2O5) can effectively reduce the sintering temperature from ... obtained for Li2ZnTi3O8 ceramic with 1·5 wt% BaCu(B2O5) sintered at 925°C for 4 h. ...
Tópico(s): Advanced ceramic materials synthesis
2011 - Springer Science+Business Media | Bulletin of Materials Science
Wu‐Zui Zheng, Peng Wang, Li‐Ming Wu, Ling Chen,
A new caged Cu-rich antimonide, BaCu(7.31(3))Sb(5), was obtained from a direct combination of the elements in a graphite crucible under a high vacuum ... 534.58(7) A(3), and Z = 2. BaCu(7.31(3))Sb(5) is the first ... Pauli paramagnetism. The calculated formation energies indicate that BaCu(7.5)Sb(5)[triple bond]Ba(2) ...
Tópico(s): Iron-based superconductors research
2010 - American Chemical Society | Inorganic Chemistry
Haitao Jiang, Jiwei Zhai, Jingji Zhang, Xi Yao,
... TiO 3 (BST) ceramics with the addition of BaCu(B 2 O 5 ) were investigated in detail. ... C. It was suggested that a liquid phase BaCu(B 2 O 5 ) assisted the densification of ... ceramics at lower temperatures. For a low‐level BaCu(B 2 O 5 ) addition (2.0 mol%), ... 0.984 GHz, BST‐added 2.0 mol% BaCu(B 2 O 5 ) possessed a dielectric constant ...
Tópico(s): Dielectric properties of ceramics
2009 - Wiley | Journal of the American Ceramic Society
C. Kranenberg, Albrecht Mewis,
... 8, 146(1), c = 11, 629(2)Å), BaCu 9 Si 4 ( a = 8, 198(2), c = ... 273(2), c = 11, 909(5)Å) sowie BaCu 9 Ge 4 ( a = 8, 338(4), c = ... 13 ‐Typs, der auch von der binären Phase BaCu 13 gebildet wird. Deren Cu2‐Positionen werden bei ... Verzerrung der Koordinationspolyeder. Messungen des elektrischen Widerstands an BaCu 9 Si 4 weisen die Verbindungen als metallische ...
Tópico(s): Iron-based superconductors research
2003 - Wiley | Zeitschrift für anorganische und allgemeine Chemie
C. Shivakumara, M. S. Hegde, H. Rajagopal, A. Sequiera,
Abstract The structures of La 4 BaCu 4 NiO 13.20 and La 4 BaCu 4 CoO 13.35 oxides synthesized in NaOH–KOH flux at 450°C were ... 5-coordinated (4j) sites of the La 4 BaCu 5 O 13+δ system. Increase in oxygen ... compared with that of the parent La 4 BaCu 5 O 13+δ .
Tópico(s): Advanced Condensed Matter Physics
2000 - Elsevier BV | Materials Research Bulletin
Markus Tampier, Dirk Johrendt,
... TG) (GeS 4 ) 4 . Thus the structure of BaCu 6 Ge 2 S 8 can be derived ... maintain the fcc-arrangement. This structure interpretation of BaCu 6 Ge 2 S 8 from the viewpoint ...
Tópico(s): Organometallic Compounds Synthesis and Characterization
1998 - De Gruyter | Zeitschrift für Naturforschung B
Zhanna V. Dobrokhotova, Natalya V. Gogoleva, Ekaterina N. Zorina‐Tikhonova, Mikhail A. Kiskin, Владимир В. Чернышев, А. Л. Емелина, Mikhail A. Bukov, Alexander S. Goloveshkin, Иван С. Бушмаринов, А.А. Sidorov, A.S. Bogomyakov, М.Л. Ковба, Vladimir M. Novotortsev, И.Л. Еременко,
... water give crystals of the 3D coordination polymers [BaCu(Cpdc) 2 ] n ( 1 ), [BaCu(Cbdc) 2 (H 2 O)] n ( 2 ) and [ ... of the coordinated water molecules to give anhydrous [BaCu(Cbdc) 2 ] n ( 4 ). The structures of 1 – ...
Tópico(s): Thermal and Kinetic Analysis
2015 - Wiley | European Journal of Inorganic Chemistry
T. Shiroka, Francesco Casola, W. E. A. Lorenz, Krunoslav Prša, A. Zheludev, H. R. Ott, J. Mesot,
The disordered quasi-one-dimensional magnet BaCu${}_{2}$SiGeO${}_{7}$ is considered as one of the best physical realizations of the random Heisenberg chain model, which features an irregular ... extensive ${}^{29}$Si NMR and magnetization studies of BaCu${}_{2}$SiGeO${}_{7}$, combined with numerical quantum Monte ...
Tópico(s): Advanced Condensed Matter Physics
2013 - American Physical Society | Physical Review B
Mei Guo, Shuping Gong, Gang Dou, Dongxiang Zhou,
... xTiO2 composite ceramics with different weight percentages of BaCu(B2O5) additive prepared by solid-state reaction method ... from 1250 °C to 950 °C by doping BaCu(B2O5) additive and the temperature coefficient of resonant ... C by incorporating TiO2. Addition of 2 wt% BaCu(B2O5) in ZnTiNb2O8–xTiO2 (x = 0.8) ceramics ...
Tópico(s): Dielectric properties of ceramics
2011 - Elsevier BV | Journal of Alloys and Compounds
Dongxiang Zhou, Gang Dou, Mei Guo, Shuping Gong,
... and microwave dielectric properties of ZnTiNb2O8 ceramics with BaCu(B2O5) additions prepared by solid-state reaction method ... However, it was found that the addition of BaCu(B2O5) lowered the sintering temperature of ZnTiNb2O8 ceramics ...
Tópico(s): Dielectric properties of ceramics
2011 - Elsevier BV | Materials Chemistry and Physics