SYNTHESIS AND STUDY OF STRUCTURAL, THERMAL, OPTICAL AND MAGNETIC-PROPERTIES OF STABILIZED MN1-XNIXO SYSTEM (0.01-LESS-THAN-X-LESS-THAN-0.30)

被引：3

作者：

BAKARE, PP ^{[1
]}

DESHPANDE, CE ^{[1
]}

GUNJIKAR, VG ^{[1
]}

SINGH, P ^{[1
]}

MANDALE, AB ^{[1
]}

DATE, SK ^{[1
]}

机构：

[1] NATL CHEM LAB,DIV PHYS CHEM,POONA 411008,MAHARASHTRA,INDIA

来源：

BULLETIN OF MATERIALS SCIENCE | 1994年 / 17卷 / 06期

关键词：

STABILIZED MNO; CHEMICAL SYNTHESIS; SURFACE PASSIVATION;

D O I：

10.1007/BF02757578

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

A novel chemical passivation route is established to obtain microcrystalline solid solutions of binary oxide system Mn1-xNixO (0.01 < x < 0.30). During the passivation process, controlled thermal decomposition of manganous oxalate is carried out to obtain pure MnO and its subsequent reaction with NiO in oxygen-free nitrogen resulted in microcrystalline powder of these solid solutions. The powder is thoroughly characterized by various physicochemical techniques such as XRD, DTA/TG/DTG, diffused reflectance spectra, magnetic susceptibility, TEM, XPS etc. The observed processing-structure-property correlations confirmed the improved thermal stability of these powders (relative to pure MnO) in air. The important role of dopant paramagnetic Ni2+ ions in enhancing the passivation of the bulk Mn2+ species is explained on the basis of the formation of mixed oxide complex species on the surface of these microcrystalline powders.

引用

页码：1015 / 1028

页数：14

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