Электронный каталог

Статья

Kalanda, N.
Phase Transformations and Magnetic Properties of Non-Stoichiometric Strontium Ferromolybdate / N.Kalanda, A.Doroshkevich, A.Altynbassova, [a.o.]. – Text : electronic // Chemical Methodologies. – 2026. – Vol. 10, No. 4. – P. 428-437. – URL: https://doi.org/10.48309/chemm.2026.563461.2053. – Bibliogr.: 25.

This study investigates the phase transformation dynamics during the synthesis of non-stoichiometric strontium ferromolybdate (Sr&sub(2)Fe&sub(1.2)Mo&sub(8)O&sub(6-*d), SFMO) via solid-state reaction from SrCO&sub(3), Fe&sub(2)O&sub(3), and MoO&sub(3). Intermediate phases SrFeO&sub(3) and SrMoO&sub(4) form sequentially between 500–850 K and hinder complete SFMO crystallization due to kinetic limitations at high temperatures (*} 1270 K). To overcome this, combined synthesis modes involving controlled heating rates and intermediate grinding were developed, enabling the production of singlephase SFMO with 89% Fe/Mo superstructural ordering. Magnetic characterization revealed that reduced cation ordering increases antiferromagnetic clustering, suppressing long-range ferrimagnetic order and lowering magnetization in field-cooling measurements. Zerofield-cooling data confirmed superparamagnetic behavior, indicating magnetic inhomogeneity with coexisting superparamagnetic nanoparticles and ferrimagnetic grains. The results demonstrate that precise control of synthesis conditions is essential to minimize kinetic barriers, suppress defect formation, and achieve reproducible magnetic properties in SFMO, a promising candidate for spintronic applications.



Спец.(статьи,препринты) = С 36 - Физика твердого тела$
Спец.(статьи,препринты) = С 332.8 - Синхротронное излучение. Лазеры на свободных электронах. Получение и использование рентгеновских лучей
Спец.(статьи,препринты) = С 44 г - Физико-химические методы анализа элементов. Анализ с помощью ядерных методов
ОИЯИ = ОИЯИ (JINR)2026