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Structural, magnetic and ferromagnetic resonance characterization studies have been performed on lay-ered ferromagnetic-ferroelectric oxides that show strong magnetoelectric coupling. The samples contained thick films of ferrites or…

Materials Science · Physics 2009-11-10 A. A. Bush , Y. K. Fetisov , K. E. Kamentsev , V. F. Meshcheryakov , G. Srinivasan

Electrical resistivity, specific heat and NMR measurements classify non-centrosymmetric $\rm Mo_3Al_2C$ ($\beta$-Mn type, space group $P4_132$) as a strong-coupled superconductor with $T_c = 9$~K deviating notably from BCS-like behaviour.…

We explore manganite interface magnetism in epitaxially grown La0.7Sr0.3MnO3(LSMO)/SrTiO3 ultrathin superlattices (SL) along (110) orientation. we show that robust ferromagnetism persists down to four monolayers LSMO(MLs) (~1.1 nm in…

Materials Science · Physics 2015-05-13 J. X. Ma , X. F. Liu , T. Lin , G. Y. Gao , J. P. Zhang , W. B. Wu , X. G. Li , Jing Shi

We report a comprehensive study of electronic-correlation effects in Manganese-based antiferromagnetic pnictides BaMn$_2$Pn$_2$ (Pn=P,As,Sb,Bi). Our density functional theory plus slave-spin mean-field simulations indicate that all the…

Strongly Correlated Electrons · Physics 2025-10-31 Matteo Crispino , Niklas Witt , Tommaso Gorni , Giorgio Sangiovanni , Luca de' Medici

Electric-field controlled exchange bias in a heterostructure composed of the ferromagnetic manganite La0.7Sr0.3MO3 and the ferroelectric antiferromagnetic BiFeO3 has recently been demonstrated experimentally. By means of a microscopic model…

Strongly Correlated Electrons · Physics 2011-07-19 M. J. Calderon , S. Liang , R. Yu , J. Salafranca , S. Dong , S. Yunoki , L. Brey , A. Moreo , E. Dagotto

Analyzing the orbital structure and lattice distortions in the CE phase of half-doped manganites, we demonstrate that the usual approach directly relating the orbital occupation of Jahn-Teller ions to the displacements of neighboring…

Strongly Correlated Electrons · Physics 2011-06-06 A. O. Sboychakov , K. I. Kugel , A. L. Rakhmanov , D. I. Khomskii

Antiferromagnetic antiperovskites, of the form Mn$_3B$N ($B$ = Ni, Cu, Zn, Sn, Ir, and Pt), have shown an outstanding behavior in which, giant negative thermal expansion and chiral magnetic structures are intertwined. As such, aiming to…

Materials Science · Physics 2022-09-07 L. Florez-Gomez , W. Ibarra-Hernandez , A. C. Garcia-Castro

Neutron spectroscopy measurements reveal short-range spin correlations near and above the ferromagnetic-paramagnetic phase transition in manganite materials of the form La$_{1-x}A_{x}$MnO$_{3}$, including samples with an insulating ground…

Polycrystalline YMn1-xFexO3 (YMFO_x) (0 <= x <= 0.1) compounds have been prepared in single phase and characterized by synchrotron X-ray diffraction, X-ray absorption near edge spectroscopy, magnetization, and dielectric measurements.…

Materials Science · Physics 2017-07-26 Sonu Namdeo , A. K. Sinha , M. N. Singh , A. M. Awasthi

Despite extensive researches on manganites owing to widespread use in modern electronics, this class of metal oxides does not cease to surprise with its unique properties and new phenomena. Here we have studied structural and magnetic…

We report on the magnetic properties of the manganite Bi_{1-x}Ca_{x}MnO_3 (x=0.33) at low temperature. The analysis of the field expansion of the ac susceptibility and the observation of aging properties make clear that a spin glass phase…

Materials Science · Physics 2009-11-13 M. Giot , A. Pautrat , G. Andre , D. Saurel , M. Hervieu , J. Rodriguez-Carvajal

Generally, one has two strategies to achieve magnetic frustration: through geometric means or interactions with different length scales. As the former leads to much simpler theoretical treatments it is favored and so magnetic sublattices…

Strongly Correlated Electrons · Physics 2020-02-26 K. M. Taddei , L. D. Sanjeewa , J. Xing , Q. Zhang , D. Parker , A. Podleznyak , D. dela Cruz , A. S. Sefat

The electronic structure and magnetic properties of La_{1-x}A_{x}MnO_3 are investigated. It is assumed that, at the outermost layer, the environment of the Mn ions does not have cubic symmetry. The e_g orbitals are split and the double…

Strongly Correlated Electrons · Physics 2009-10-31 M. J. Calderon , L. Brey , F. Guinea

New metal-ordered manganites RBaMn_{2}O_{6} have been synthesized and investigated in the structures and electromagnetic properties. RBaMn_{2}O_{6} can be classified into three groups from the structural and electromagnetic properties. The…

Strongly Correlated Electrons · Physics 2009-11-07 T. Nakajima , H. Kageyama , H. Yoshizawa , Y. Ueda

We present the results of a systematic x-ray scattering study of the charge and orbital ordering in the manganite series Pr$_{1-x}$Ca$_x$MnO$_3$ with $x$=0.25, 0.4 and 0.5. The temperature dependence of the scattering at the charge and…

Strongly Correlated Electrons · Physics 2009-10-31 M. v. Zimmermann , C. S. Nelson , J. P. Hill , Doon Gibbs , M. Blume , D. Casa , B. Keimer , Y. Murakami , C. -C. Kao , C. Venkataraman , T. Gog , Y. Tomioka , Y. Tokura

We measure the optical conductivity of (SrMnO3)n/(LaMnO3)2n superlattices (SL) for n=1,3,5, and 8 and 10 < T < 400 K. Data show a T-dependent insulator to metal transition (IMT) for n \leq 3, driven by the softening of a polaronic…

Materials Science · Physics 2010-12-16 A. Perucchi , L. Baldassarre , A. Nucara , P. Calvani , C. Adamo , D. G. Schlom , P. Orgiani , L. Maritato , S. Lupi

Ferromagnet-ferroelectric-metal superlattices are proposed to realize the large room-temperature magnetoelectric effect. Spin dependent electron screening is the fundamental mechanism at the microscopic level. We also predict an electric…

Mesoscale and Nanoscale Physics · Physics 2009-12-16 Tianyi Cai , Sheng Ju , Jaekwang Lee , Na Sai , Alexander A. Demkov , Qian Niu , Zhenya Li , Junren Shi , Enge Wang

The physics of ferromagnetic doped manganites, such as \chem{La_{1-x}Ca_xMnO_3} with $x\approx0.2$--0.4, is reviewed. The concept of double exchange is discussed within the general framework of itinerant electron magnetism. The new feature…

Strongly Correlated Electrons · Physics 2015-06-24 D. M. Edwards

The archetypal $3d$ Mott insulator hematite, Fe$_2$O$_3$, is one of the basic oxide components playing an important role in mineralogy of Earth's lower mantle. Its high pressure-temperature behavior, such as the electronic properties,…

Strongly Correlated Electrons · Physics 2019-10-07 I. Leonov , G. Kh. Rozenberg , I. A. Abrikosov

Emergent magnetic states at oxide interfaces arise from the interplay of charge transfer, orbital reconstruction, and dimensional confinement, offering a route to engineered correlated-electron behavior in nanoscale spintronic materials.…