Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Meng, Guangyao"'
Publikováno v:
Materials Research Bulletin. 36:1587-1594
SrFeCo 0.5 O 3.25+δ powders have been successfully synthesized from SrCO 3 , 2CoCO 3 ·3Co(OH) 2 ·xH 2 O and Fe 2 O 3 based on using the principle of gelcasting. Thermal decomposition of the gelcasting powder was analyzed by differential thermal an
Publikováno v:
Sensors and Actuators B: Chemical. 65:64-67
This paper reports the preparation and gas sensitivity properties of Zn 1− x Cd x Fe 2 O 4 to C 2 H 2 OH. Raw powders of Zn 1− x Cd x Fe 2 O 4 were obtained by a chemical co-precipitation and solid-state reaction method. The effects of the calcin
Publikováno v:
Materials Science and Engineering: B. 64:60-63
The catalytic effect of SmInO 3 , on the conduction and gas-sensing properties of CdIn 2 O 4 was investigated. The results demonstrated that SmInO 3 increases the electrical impedance and improves the sensitivity and selectivity of CdIn 2 O 4 materia
Publikováno v:
Sensors and Actuators B: Chemical. 55:19-22
This paper reports the preparation and gas-sensing properties of ZnFe 2 O 4 . Raw powders of ZnFe 2 O 4 were obtained by chemical coprecipitation. Effects of the calcining temperature on the phase constituents and microstructure are characterized by
Publikováno v:
Sensors and Actuators B: Chemical. 31:209-212
A galvanic-cell-type SO x ( x = 2,3) gas sensor with Ag-s″-Al 2 O 3 solid electrolyte, porous Pt as working electrode and Ag as reference electrode has been constructed and tested. The electromotive force (e.m.f.) responses are in good agreement wi
Publikováno v:
Sensors and Actuators B: Chemical. 17:1-5
A.c. complex impedance measurement has been used in a mixed system of tin oxide and iron oxide in an attempt to obtain more information about the gas-sensitive mechanism of semiconducting metallic oxide gas sensors. The impedance spectra in air, liqu
Autor:
Zhang Yuheng, Wang Xiandong, Xu Chen, Meng Guangyao, Fan Chengao, Wu Zi-Qin, Peng Dingkun, Cheng Tingzhu
Publikováno v:
Solid State Communications. 76:361-364
The structures and compositions of oxide sample Bi2Sr2CaGa0.6Co1.4Oy were studied by means of transmission electron microscope and powder x-ray diffractometer. The results show that there are three kinds of oxides in the mixed sample. (1)dominant per
Autor:
Hu Xue-Long, Peng Dingkung, Ruan Yao-Zhong, Mao Xianglei, Meng Guangyao, Zhang Yuheng, Li Li-Ping, Hu Junbao
Publikováno v:
Chinese Physics Letters. 5:153-156
The thermal expansion coefficient of single phase superconductor YBa2Cu3O7-δ was measured by the method of differential parallelplate capacitance. An obvious decrease of volume near 205K and a small jump of the thermal expansion coefficient at Tc we
Autor:
Mao Xianglei, Li Li-Ping, Wang Jun, Cheng Tingzhu, Chen Zhaojia, Yang Hongshun, Chen Lin, Hu Junbao, Ruan Yao-Zhong, Meng Guangyao, Peng Dingkun, Zhang Yuheng
Publikováno v:
Physica C: Superconductivity. :978-979
The single (123) phase of Y-Ba-Cu oxides with T-phase structure was prepared using the air-quenching technique. From the measurements of electrical resistance, thermal expansion coefficience, specific heat, ac susceptibility and XRD, it is the first
Autor:
Zhang Yuheng, Yue Yi, Wang Cheng-You, Meng Guangyao, Peng Dingkun, Hu Junbao, Cao Liezhao, Wang Jun
Publikováno v:
Physica C: Superconductivity. :980-981
For the intermediate Y-Ba-Cu-0 (123) samples, from the XRD, resistivity and susceptibility measurement, it can be concluded that the (123) T-phase is non-superconduting till 2.4K and the superconductivity in the intermediate samples is caused by the