Influence of composite doping on magnetic properties for NiCuZn ferrite;

A modified cathode material of LiNi1/3Co1/3Mn1/3O2 with the layered structure was prepared by composite doping with F and Si ions under oxygen atmosphere using (Ni1/3Co1/3Mn1/3)(OH)2 as the precursor obtained by co-precipitation method.

0-10 mol% nano-Sm2O3,nano-ZrO2(3Y) powder was used as raw materials for composite doping.

Studies on the Co-doping Modified Spinel LiMn_(1.98)Cr_(0.02)O_(4-y)Cl_y;

Electrochemical performance of spinel LiMn_2O_4 with Li and Al co-doping

The co-doping modified spinel LiMn1.

To investigate the effect of La(III) and Sr(II) codoping on the electrochemical performance of the samples,simulated batteries with the prepared codoping nickel hydroxide as cathode active material and metal hydride as counter electrode were assembled.

The introduce of complex additives made the cubic structure of the sample stable,and the conductivity was enhanced due to the increase of the crystal lat- tice and the oxygen transfer passage radii,reaching 0.

This article gives a description of the progress in self-com-pensation model for p-doping, the codoping process and mechanism, PL .

This paper was overviewed the basic properties of GaN-based material,analyzed key technologies in making blue GaN-based LEDs,such as MOVPE,P-doping ohmic contact,etching and chip dicing saw,and introduced recent progresses of technologies at present.

In the case of no determination of Al composition and p-doping density in MOCVD epitaxy of AlGaInP double heterostructure light emitting diodes,the relation of Al composition and luminescent efficiency is gotten under various p-doping density by analyzing carrier transportion in double heterojunction of LED,and the principle of doping density and Al composition vs.