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The magnetic properties of GdBaMn_{2}O_{5.0}, which exhibits charge ordering, are studied from 2 to 400 K using single crystals. In a small magnetic field applied along the easy axis, the magnetization M shows a temperature-induced reversal…

Materials Science · Physics 2009-11-13 A. A. Taskin , Yoichi Ando

We present a detailed magnetothermal study of Pr$_{0.7}$Ca$_{0.3}$MnO$_{3}$, a perovskite manganite in which an insulator-metal transition can be driven by magnetic field, but also by pressure, visible light, x-rays, or high currents. We…

Condensed Matter · Physics 2009-11-07 M. Roy , J. F. Mitchell , A. P. Ramirez , P. Schiffer

Oxide double perovskites wherein octahedra formed by both 3d elements and sp-based heavy elements give rise to unconventional magnetic ordering and correlated quantum phenomena crucial for futuristic applications. Here, by carrying out…

Strongly Correlated Electrons · Physics 2021-03-30 J. Khatua , T. Arh , Shashi B. Mishra , H. Luetkens , A. Zorko , B. Sana , M. S. Ramachandra Rao , B. R. K. Nanda , P. Khuntia

We have studied the magnetic properties of Ba_2FeNbO_6 and Ba_2MnNbO_6. it is seen that Ba_2FeNbO_6 is an antiferromagnet with a weak ferromagnetic behaviour at 5K while Ba_2MnNbO_6 shows two magnetic transitions one at 45 K and the other…

Strongly Correlated Electrons · Physics 2009-11-10 N. Rama , J. B. Philipp , M. Opel , K. Chandrasekaran , V. Sankaranarayanan , R. Gross , M. S. Ramachandra Rao

Large magnetocaloric effect has been observed in Mn3O4 around its ferrimagnetic transition at TN = 42.75 K. Field-induced isothermal entropy changes (\DeltaS) were derived from both magnetic and calorimetric techniques. The maximum…

Materials Science · Physics 2011-03-04 S. Thota , F. Guillou , V. Hardy , A. Wahl , W. Prellier , J. Kumar

We report magnetization and specific heat measurements down to 2 K and electrical resistivity down to millikelvin temperatures on polycrystalline samples of the non-centrosymmetric compound Yb2Co12P7. In addition to the previously reported…

Strongly Correlated Electrons · Physics 2015-06-03 J. J. Hamlin , M. Janoschek , R. E. Baumbach , B. D. White , M. B. Maple

Single crystals of electron-doped SrMnO3 with a cubic perovskite structure have been systematically investigated as the most canonical (orbital-degenerate) double-exchange system, whose ground states have been still theoretically…

Strongly Correlated Electrons · Physics 2015-05-20 H. Sakai , S. Ishiwata , D. Okuyama , A. Nakao , H. Nakao , Y. Murakami , Y. Taguchi , Y. Tokura

Transition-metal oxides with an ABO$_3$ perovskite structure exhibit strongly entangled structural and electronic degrees of freedom and thus, one expects to unveil exotic phases and properties by acting on the lattice through various…

Perovskite manganites are quantum materials exhibiting competing interactions inducing colossal magnetoresistance (CMR). The prevailing theory of CMR highlights the essential role of electron-phonon coupling (EPC), but mounting evidence…

Using first-principles techniques, we study the structural, magnetic and electronic properties of (111)-oriented (LaMnO$_3$)$_{2n}$$\vert$(SrMnO$_3$)$_{n}$ superlattices of varying thickness ($n=2,4,6$). We find that the properties of the…

LaTiO$_3$ is known as Mott-insulator which orders antiferromagnetically at $T_{\rm N}=146$ K. We report on results of thermal expansion and temperature dependent x-ray diffraction together with measurements of the heat capacity, electrical…

The structural phase transformation in the La2/3Ba1/3MnO3 perovskite manganite was studied by ultrasound, neutron diffraction and electron microscopy techniques. Minima of the velocity and maxima of the decrement of the ultrasound point out…

Materials Science · Physics 2007-05-23 A. B. Beznosov , E. L. Fertman , P. P. Pal-Val , L. N. Pal-Val , C. Ritter , M. Rossell , D. D. Khalyavin

Single crystals of Nd_{1-x}Pb_{x}MnO_{3} with x=0.2 are grown by high temperature solution growth technique using PbO-PbF_{2} flux. Magnetization studies on the samples show a transition to a ferromagnetic state below T_c ~ 125 K and the…

Strongly Correlated Electrons · Physics 2009-11-07 Anika Kumar , Nilotpal Ghosh , Janhavi P. Joshi , H. L. Bhat , S. V. Bhat

We have investigated magnetization(M), magnetocaloric effect(MCE) and magnetothermopower(MTEP) in polycrystalline Pr0.6Sr0.4MnO3, which shows a second-order paramagnetic to ferromagnetic transition near room temperature (TC = 305 K).…

Strongly Correlated Electrons · Physics 2012-10-19 D. V. Maheshwar Repaka , T. S. Tripathi , M. Aparnadevi , R. Mahendiran

The magnetic transport properties have been measured for La0.67-xYxCa0.33MnO3 (0 <= x <= 0.14) system. It was found that the transition temperature Tp almost linearly moves to higher temperature as H increases. Electron spin resonance…

Strongly Correlated Electrons · Physics 2009-11-10 G. Li , S. -J. Feng , F. Liu , Y. Yang , R. -K. Zheng , T. Qian , X. -Y. Guo , X. -G. Li

The electronic structure of La0.8Sr0..2MnO3/SrTiO thin film, which was prepared by Laser MBE, was studied by X-ray photoemission spectra (XPS) in the temperature interval of 300 to 1000 K. Experimental results showed that the electronic…

Strongly Correlated Electrons · Physics 2007-05-23 Guotai Tan , S. Dai , P. Duan , H. B. Lu , K. Xie , Y. L. Zhou , Z. H. Chen

We present a dielectric spectroscopy study of the polar dynamics linked to the orbitally driven ferroelectric transition in the skyrmion host GaV4S8. By combining THz and MHz-GHz spectroscopy techniques, we succeed in detecting the…

Strongly Correlated Electrons · Physics 2015-11-18 Zhe Wang , E. Ruff , M. Schmidt , V. Tsurkan , I. Kézsmárki , P. Lunkenheimer , A. Loidl

Using ab initio thermodynamics we compile a phase diagram for the surface of Fe3O4(001) as a function of temperature and oxygen pressures. A hitherto ignored polar termination with octahedral iron and oxygen forming a wave-like structure…

Materials Science · Physics 2009-11-11 R. Pentcheva , F. Wendler , H. L. Meyerheim , W. Moritz , N. Jedrecy , M. Scheffler

We model changes of magnetic ordering in Mn-antiperovskite nitrides driven by biaxial lattice strain at zero and at finite temperature. We employ a non-collinear spin-polarised density functional theory to compare the response of the…

Strongly Correlated Electrons · Physics 2017-06-07 J. Zemen , E. Mendive Tapia , Z. Gercsi , R. Banerjee , C. E. Patrick , J. B. Staunton , K. G. Sandeman

The transport characteristics across the pulsed laser deposited Ni0.07Zn0.93O/Mg0.21Zn0.79O heterojunction exhibits p-n type semiconducting properties at 10 K while at 100 K, its characteristics become similar to that of an n-n junction.…

Materials Science · Physics 2017-03-14 Tanveer A. Dar , Arpana Agrawal , Ram J. Choudhary , Pranay K. Sen , Pankaj Misra , Pratima Sen
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