The Composition and Magnetic Structure of Fe3O4/γ-Fe2O3 Core–Shell Nanocomposites at 300 and 80 K: Mössbauer Study (Part I)

A. S. Kamzin*, I. M. Obaidat, A. A. Valliulin, V. G. Semenov, I. A. Al-Omari

*المؤلف المقابل لهذا العمل

نتاج البحث: المساهمة في مجلةمراجعة النظراء

6 اقتباسات (Scopus)

ملخص

Abstract: The magnetic structure and the composition of Fe3O4/γ-Fe2O3 nanoparticles are studied at 300 and 80 K with Mössbauer spectroscopy. We found that the Fe3O4/γ-Fe2O3 particles are a core–shell nanocomposite (NC), in which magnetite Fe3O4 is covered with a maghemite shell (γ-Fe2O3). We showed that the thickness of the maghemite shell (γ-Fe2O3) depends on synthesis technology. We found that a layer, whose magnetic structure differs from that of the inner part of the shell (γ-Fe2O3), is formed on the surface of the maghemite shell (γ-Fe2O3) in the Fe3O4/γ-Fe2O3 NC. An intermediate layer is formed in the spin-glass state between the core and the shell. The data on structure of core–shell nanocomposites open up prospects to explain the properties of such particles, which are of great interest to use in various fields, including biomedicine.

اللغة الأصليةEnglish
الصفحات (من إلى)1933-1943
عدد الصفحات11
دوريةPhysics of the Solid State
مستوى الصوت62
رقم الإصدار10
المعرِّفات الرقمية للأشياء
حالة النشرPublished - أكتوبر 1 2020

ASJC Scopus subject areas

  • ???subjectarea.asjc.2500.2504???
  • ???subjectarea.asjc.3100.3104???

بصمة

أدرس بدقة موضوعات البحث “The Composition and Magnetic Structure of Fe3O4/γ-Fe2O3 Core–Shell Nanocomposites at 300 and 80 K: Mössbauer Study (Part I)'. فهما يشكلان معًا بصمة فريدة.

قم بذكر هذا