Results 81 to 90 of about 4,266 (203)

A first principles study of wurtzite-structure MnO [PDF]

, 2003
We present results of a density functional theory study of MnO in the wurtzite structure. Our motivation is provided by recent experiments reporting ferromagnetism in Mn-doped wurtzite structure ZnO.
Gopal, Priya, Spaldin, Nicola, Waghmare, Umesh. V.   +2 more
core   +2 more sources

Control of Varistor Voltage by Grain-size Control of Bi-added ZnO Varistors

IOP Conference Series: Materials Science and Engineering, 2011
Relationship between the grain size of ZnO and the amounts of Bi and Sb for Bi-Ba-Sb-Co-Mn-added ZnO was investigated. The amount of Bi at which the grain size of ZnO became the maximum shifted to the notably larger one by adding small amount of Sb such as 0.01 mol%.
Ai Fukumori, Takayuki Watanabe, Yuuki Sato, Shinzo Yoshikado   +3 more
openaire   +1 more source

Photopyroelectric spectrum of MNO2 Doped Bi2O3 - TiO2 - ZnO ceramic combination [PDF]

, 2008
Photopyroelectric spectroscopy is used to study the energy band-gap of the ceramic (ZnO 0.25 Bi2O3 +0.25 TiO2 + x MnO2), x = 0 - 1.3 mol%, sintered at isothermal temperature 1190 and 1270°C for 2 hours in air.
Hashim, Mansor, Mat Yunus, Wan Mahmood, Rizwan, Zahid, Shaari, Abdul Halim, Zakaria, Azmi   +4 more
core  

Voltage biased Varistor-Transistor Hybrid Devices: Properties and Applications

AIMS Materials Science, 2015
The paper describes the properties and potential applications of a novel hybrid varistor device originating from biased voltage induced modified nonlinear current-voltage (I-V) characteristics.
Raghvendra K Pandey, William A Stapleton, Mohammad Shamsuzzoha, Ivan Sutanto   +3 more
doaj   +1 more source

Lightning current tests on radars and similar structures [PDF]

, 2010
A lightning stroke presents a real challenge due to its potential to cause irreversible damage on electronics. Future systems are packaged in composite shielding materials, which give little or no protection with respect to the electromagnetic fields ...
Blaj, M.A., Buesink, F.J.K., Damstra, G.C., Leferink, F.B.J.   +3 more
core   +2 more sources

Growth Techniques for Bulk ZnO and Related Compounds

, 2011
ZnO bulk crystals can be grown by several methods. 1) From the gas phase, usually by chemical vapor transport. Such CVT crystals may have high chemical purity, as the growth is performed without contact to foreign material.
Galazka, Zbigniew, Ganschow, Steffen, Klimm, Detlef, Schulz, Detlev, Uecker, Reinhard   +4 more
core   +1 more source

Influence Mechanism of Micro Grain-boundary Parameters to the Electrical Properties of ZnO Varistor

工程科学与技术
ZnO varistors exhibit excellent nonlinear voltage–current characteristics and substantial energy capacity, enabling them to absorb impulse energy during power system overvoltages and thus protect the electrical equipment.
Pengfei MENG, Jingke GUO, Xiao LEI, Lei WANG, Bingbing ZHANG, Kui MIAO, Jun HU   +6 more
doaj  

Path Integral Approach to Strongly Nonlinear Composite

, 2000
We study strongly nonlinear disordered media using a functional method. We solve exactly the problem of a nonlinear impurity in a linear host and we obtain a Bruggeman-like formula for the effective nonlinear susceptibility.
B. K. Chakrabarti, D. A. G. Bruggeman, D. J. Bergman, D. Stroud, G. A. Niklasson, H.-C. Lee, H.-C. Lee, H.-C. Lee, J. P. Straley, L. Gao, L. Sali, L. Sali, M. Barthélémy, M. Osofsky, Marc Barthélémy, O. Levy, O. Levy, P. M. Hui, P. M. Hui, P. M. Hui, P. M. Hui, P. Ponte Castañeda, P. Ponte Castañeda, P. Ponte Castañeda, P. Ponte Castañeda, R. Blumenfeld, R. Einziger, R. Landauer, R. R. Tremblay, W. M. V. Wan, X. C. Zeng, X. C. Zeng, X. Zhang, Y. Meir, Y.-P. Pellegrini, Y.-P. Pellegrini   +35 more
core   +3 more sources

Estudio de la región rica en Bi₂O₃ en el sistema binario ZnO-Bi₂O₃

Boletín de la Sociedad Española de Cerámica y Vidrio, 2004
Ceramic materials based in the ZnO- Bi2O3 system have their principal application as varistors. The binary system ZnO-Bi2O3 is specially relevant to the formation of the microstructure responsable of the varistor behaviour.
Caballero, A. C., Fernández, J. F., Peiteado, M., de la Rubia, M. A.   +3 more
doaj  

Circuit protection devices for transient suppression [PDF]

The Electromer Corporation has developed a series of transient voltage suppression components based on a patented, specially formulated PolyClamp (trademark) material.
Childers, Richard
core   +1 more source