Structural, Magnetic and Dielectric Studies on Strontium Substituted Nd2CuO4 System

• 作者: Appasamy Manigandan Kandasamy Sivakumar Venugopalan Anbarasu
• 来源期刊: 现代物理(英文)
• 学科: 化学
• 关键词: Ln2CuO4 STRUCTURAL ANALYSIS Powder XRD Dielectric Studies MAGNETIZATION ESR ANALYSIS
• 年，卷（期）: 2010,（2）
• 页码范围: 93-99
• 页数: 7页
• 分类号: O6

摘要

The substitution of Strontium on T'–structured Nd2CuO4 system has been carried out through solid state reaction tech-nique. From the Powder XRD patterns, it is found that the compounds are formed in single phase and crystallizes in orthorhombic structure. The variation in lattice parameters with decreasing nature of volume of the prepared com-pounds confirms the incorporation of lower atomic radii Strontium in Neodymium site. Surface morphology and ele-mental composition studies are also carried out to know the nature of the compounds and effect of Strontium substitu-tion in Nd2CuO4 system. The paramagnetic nature of all the prepared compounds has been identified through magnetization studies and the results are correlated with the electron spin resonance studies by the way of variation in resonance field and broad peak width. Increasing order of dielectric constant on higher doping concentration of Strontium and the least value of dielectric loss at higher frequencies confirms the improved surface transport properties of the prepared compounds.