Synthesis, structural and physical properties of some rare-earth doped nickel chromites

被引：0

作者：

Manhas, Ujwal ^{[1
]}

Sharma, Narayan Dutt ^{[1
]}

Singh, Devinder ^{[1
]}

机构：

[1] Univ Jammu, Dept Chem, Jammu 180006, India

来源：

INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY | 2020年 / 59卷 / 05期

关键词：

Ceramic method; Nickel chromites; Magnetic properties; Electrical transport properties; MAGNETIC-PROPERTIES; TRANSPORT-PROPERTIES; OXIDES; IONS;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A systematic investigation of structural, magnetic and transport properties of NiCr1.9R0.1O4 (R = Eu, Dy and Ho) has been undertaken. Rietveld analysis of powder X-ray diffraction data revealed that all the compounds crystallize in the cubic symmetry with Fd (3) over barm space group having small volume fraction of orthorhombic phase RCrO3. Both lattice parameter and cell volume decreases with the substitution of heavier rare earth ion which is consistent with the decrease in ionic radius of rare earth ion. The temperature dependent magnetization studies have shown that all our investigated compounds have negative value of Weiss constant. It indicates the dominance of anti-ferromagnetic interactions in the samples. The phases are semi-conductors and the conduction mechanism is dominated by Arrhenius model in the high temperature paramagnetic semiconducting region.

引用

页码：633 / 639

页数：7

共 33 条

[1] Structural and paramagnetic behavior of spinel NiCr2O4 nanoparticles synthesized by thermal treatment method: Effect of calcination temperature [J].