Synthesis and characterization of composites of mixed oxides of iron and neodymium in polymer matrix of aniline�?�formaldehyde

Bulletin of materials science

B L Kalsotra²  H N Sheikh²  N Kumar³  Sajdha²  S Kumar¹ 

[1] DRDO, New Delhi, India$$DRDO, New Delhi, IndiaDRDO, New Delhi, India$$;Department of Chemistry, University of Jammu, Jammu 180 006, India$$Department of Chemistry, University of Jammu, Jammu 180 006, IndiaDepartment of Chemistry, University of Jammu, Jammu 180 006, India$$;Defence Laboratory, Jodhpur, India$$Defence Laboratory, Jodhpur, IndiaDefence Laboratory, Jodhpur, India$$

关键词: Nanocomposites;    polymer matrix;    neodymium oxide;    spinel ferrites;    quadrupole splitting;    Scherrer equation.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Nanocomposites of mixed oxides of iron and neodymium in polymer matrix of anilineformaldehyde are reported. The composites have been obtained by treating the aqueous solution of aniline, hydrochloric acid and formaldehyde with halide of iron and neodymium oxide. The infra-red spectra show broad peaks at ∼ 590 cm^-1 and at ∼ 610 cm^-1 due to the presence of oxides of both iron and neodymium. In heated samples, the absorption peaks due to metal oxides are better resolved. A broad and strong peak in XRD spectra at 2𝜃 value of 35.69920 corresponds to spinel ð›�?-Fe₂O₃. ⁵⁷Fe Mössbauer spectrum for unheated sample gives Mössbauer parameters, i.e. isomer shift (ð›�?), quadrupole splitting (ð›�? 𝐸) and effective magnetic field (H_eff). Transmission electron microscopy (TEM) micrographs reveal well dispersed particles at different magnifications. Vibrating sample magnetometry (VSM) studies indicate that the ferrite nanoparticles exhibit characteristics of ferromagnetism.

【 授权许可】

Unknown