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New Niobium Capacitors with Stable Electrical Parameters

H. Zillgen, +2 more
- 01 Jan 2002 - 
- Vol. 25, Iss: 2, pp 147-153
TLDR
In this paper, the authors developed a new niobium capacitor which shows stable electrical values by optimizing the structure of the dielectric and the cathodic layers as well as the process parameters.
Abstract
The replacement of the anode material in tantalum capacitors by a new generation of high CV niobium powders offers the possibility to get an economical alternative to tantalum for a wide range of applications. Due to the high CV potential of niobium powder there is also an alternative to low voltage aluminum electrolytic capacitors. We developed a new niobium capacitor which shows stable electrical values. By optimizing the structure of the dielectric and the cathodic layers as well as the process parameters we gained a capacitor which can be used up to 105 °C . Electrical characteristics and lifetest behavior of niobium capacitors out of 100 k–150 k CV/g powder will be discussed.

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Journal ArticleDOI

EELS of niobium and stoichiometric niobium-oxide phases--Part I: plasmon and near-edges fine structure.

TL;DR: The intensity of the Nb-L2,3 white-line edges is correlated with niobium 4d-state occupancy in the different reference materials.
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EELS investigations of different niobium oxide phases.

TL;DR: The niobium oxide reference materials show clearly different energy loss near-edge fine structures of the Nb-M4,5 and -M2,3 edges and of the O-K edge, reflecting the specific local environments of the ionized atoms.
Journal ArticleDOI

Anodically formed oxide films on niobium: Microstructural and electrical properties

TL;DR: In this article, the electrical and structural properties of nanoscale niobium pentoxide (Nb2O5) dielectric layers in Niobium-based solid electrolyte capacitors were studied.
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Anodic $\hbox{Nb}_{2}\hbox{O}_{5}$ Nonvolatile RRAM

TL;DR: In this paper, the authors reported nonvolatile resistive switching in anodic niobium pentoxide thin-film memory cells, which were prepared at room temperature by the anodic oxidation of submicrometer-thick Nb films sputtered onto an Si wafer.
Journal ArticleDOI

Anodic Oxidation of Niobium Sheets and Porous Bodies Heat-Treatment of the Nb/Nb-Oxide System

TL;DR: In this article, high porosity sintered bodies as well as flat niobium sheets were anodized between 20-100 V in I wt % aqueous solution of o-phosphoric acid at 65°C, applying current densities between 0.01 and 0.067 mA/cm 2.
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We developed a new niobium capacitor which shows stable electrical values.