A
Ajmala Shireen
Researcher at Jawaharlal Nehru Centre for Advanced Scientific Research
Publications - 9
Citations - 254
Ajmala Shireen is an academic researcher from Jawaharlal Nehru Centre for Advanced Scientific Research. The author has contributed to research in topics: Ferroelectricity & Light scattering. The author has an hindex of 7, co-authored 8 publications receiving 223 citations.
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Journal ArticleDOI
Multiferroic and magnetoelectric nature of GaFeO3, AlFeO3 and related oxides
TL;DR: In this paper, the origin of ferroelectricity was investigated based on non-centrosymmetric magnetic ordering and disorder by carrying out first-principles calculations with pyroelectric measurements.
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Phase transitions of AlFeO3 and GaFeO3 from the chiral orthorhombic (Pna2(1)) structure to the rhombohedral (R3c) structure.
Rana Saha,Ajmala Shireen,Sharmila N. Shirodkar,Mukta Shashi Singh,Umesh V. Waghmare,A. Sundaresan,C. N. R. Rao +6 more
TL;DR: First-principles simulations are used to determine the pressure-dependent properties of AlFeO (3) and GaFeO(3) in orthorhombic and corundum structures and have estimated the critical pressures for the structural phase transition between the two structures.
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Structure and magnetic properties of the Al1−xGaxFeO3 family of oxides: A combined experimental and theoretical study
Rana Saha,Ajmala Shireen,A.K. Bera,Sharmila N. Shirodkar,Y. Sundarayya,Nandakumar Kalarikkal,S. M. Yusuf,Umesh V. Waghmare,A. Sundaresan,C. N. R. Rao +9 more
TL;DR: In this article, the authors have studied both experimentally and theoretically the important role of disorder at the cation site on magnetic and related properties of the Alsub 1-x}Ga{sub x}FeO{sub 3} family of oxides crystallizing in a non-centrosymmetric space group.
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Multiferroic and magnetodielectric properties of the Al1−xGaxFeO3 family of oxides
TL;DR: In this paper, the authors describe a non-centrosymmetric space group of multiferroic structures with magnetodielectric properties, with Al 0.5Ga0.5FeO3 showing an unusually large magnetocapacitance at 300 K.
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Coupled phonons, magnetic excitations, and ferroelectricity in AlFeO3: Raman and first-principles studies
Pradeep Kumar,Achintya Bera,D. V. S. Muthu,Sharmila N. Shirodkar,Rana Saha,Ajmala Shireen,A. Sundaresan,Umesh V. Waghmare,A. K. Sood,C. N. R. Rao +9 more
TL;DR: In this article, the authors determined the nature of coupled phonons and magnetic excitations in AlFeO3 using inelastic light scattering from 5 to 315 K covering a spectral range from 100 to 2200 cm(-1) and complementary first-principles density functional theory-based calculations.