Aliovalent Calcium Substitution: An Effective Way to Enhance the Magnetoelectric Coupling Properties of Multiferroic BiFeO3

Manoj Mohan, Imaddin A. Al-Omari, Salim H. Al-Harthi, Myo T.Z. Myint, Bibin Jacob, K. C. Dhanyaprabha, Hysen Thomas*

*المؤلف المقابل لهذا العمل

نتاج البحث: المساهمة في مجلةArticleمراجعة النظراء

ملخص

Kinetics of magnetoelectric coupling in bismuth ferrite (BiFeO3) with the substitution of aliovalent calcium ion is investigated. The resulting structural, dielectric, magnetic, and magnetoelectric (ME) coupling properties are explained in terms of chemical pressure originating from the substituent ion. Substitution of calcium finds to reduce the oxygen vacancies. Two important substitution concentrations find to be critical in ferroelectric (FE) and ME coupling properties. At 10 at% calcium, highest remanent polarization is obtained and maximum ME coupling coefficient is observed at 20 at%, which suggests calcium concentration between 10% and 20% can be optimized to obtain good electrical and ME coupling properties of BiFeO3. Maximum ME coupling coefficient at calcium concentration 20 at% is close to numerical calculations reported in the literature. Magnetic properties are also favorably modified by the substitution; a coupled antiferromagnetic and weak ferromagnetic ordering is obtained. Also, a variation in blocking temperature and spin relaxation is observed with respect to the substituent ion concentration.

اللغة الأصليةEnglish
رقم المقال2200445
دوريةPhysica Status Solidi (A) Applications and Materials Science
مستوى الصوت219
رقم الإصدار24
المعرِّفات الرقمية للأشياء
حالة النشرPublished - ديسمبر 2022
منشور خارجيًانعم

ASJC Scopus subject areas

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  • ???subjectarea.asjc.3100.3104???
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  • ???subjectarea.asjc.2500.2508???
  • ???subjectarea.asjc.2500.2505???
  • ???subjectarea.asjc.2200.2208???

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