Magnetic Suceptibility of Materials of the Dy–In–O System

Design of complex inorganic compounds of rare earth transition 3d-metals and their template-directed synthesis is a line of research intensively pursued in the present-day inorganic chemistry, which is due to both the fundamental significance of the problem and the necessity of designing new magnetic materials for different applications [1–3]. The purpose of this study is to identify the composition – structure – magnetic susceptibility relationship in the family of compounds of the Dy–In–O system. These compounds are formed by dissolving the salts In(NO3)3 and Dy(NO3)3 in distilled water, followed by a chemical co-precipitation of dysprosium and indium hydroxides from the resulting solution using an aqueous solution of 25% ammonia рН 10 with a subsequent washing and heat treatment in air at 1000°С for 1 h. The content of indium in the solution of salts was varied from 0 to 100 at.%. An X-ray diffraction analysis was performed in a Rigaku Miniflex 600 diffractometer using CuKα-emission in the angular range 10–90° (2θ) with a scanning step of 0.02° and a recording rate of 2 deg/min. The diffraction peaks were identified using the data bases PDF 4+ and a software package for powder X-ray diffraction analysis POWDER CELL 2.4. The magnetic susceptibility was determined from the variations in the coil inductance after a powder sample had been placed into it, using an LCR Agilent E4980A precision meter, at room temperature. The measurement error was ± 3%.