Structural and magnetic studies of the Zn-substituted magnesium ferrite chromate

A. M. Gismelseed, K. A. Mohammed, A. D. Al-Rawas, A. A. Yousif, H. M. Widatallah, M. E. Elzain

نتاج البحث: المساهمة في مجلةمقالمراجعة النظراء

6 اقتباسات (Scopus)

ملخص

The mixed zinc-magnesium ferrite chromate with composition Mg1-xZnxFeCrO4 (0.0 ≤ x ≤ 1.0) prepared by the conventional solid state double sintering ceramic technique were characterized using X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), and Mössbauer Spectroscopy (MS). The analysis of the X-ray pattern reveal that the samples crystalize in a single-phase cubic spinel structure and the lattice parameter increases linearly with increasing the Zn content. The SEM micrographs showed aggregates of stacked grains of about (0.2 ∼ 1.5 μm) in diameter. The 78 K Mössbauer spectrum of pure magnesium chromate shows an ordered magnetic structure with well resolved tetrahedral and octahedral sites. As Zn substitutes for Mg, the 78 K spectra started to show the presence of a paramagnetic component superimposed on broadened magnetic sextets. This behavior is attributed to the presence of superparamagnetic domains in the samples which will be discussed based on the weakening of A-B exchange interaction in ferrite lattice due to replacement of Fe3+ ions in tetrahedral sites by Zn2+ ions.

اللغة الأصليةEnglish
الصفحات (من إلى)57-63
عدد الصفحات7
دوريةHyperfine Interactions
مستوى الصوت226
رقم الإصدار1-3
المعرِّفات الرقمية للأشياء
حالة النشرPublished - أبريل 2014

ASJC Scopus subject areas

  • ???subjectarea.asjc.3100.3107???
  • ???subjectarea.asjc.3100.3106???
  • ???subjectarea.asjc.3100.3104???
  • ???subjectarea.asjc.1600.1606???

بصمة

أدرس بدقة موضوعات البحث “Structural and magnetic studies of the Zn-substituted magnesium ferrite chromate'. فهما يشكلان معًا بصمة فريدة.

قم بذكر هذا