Results 251 to 260 of about 23,476 (287)

Differentiating between perovskite and double perovskite nanocrystals

2023
National Research Foundation (NRF)
Mishra, Pritish, Zhang, Mengyuan, Lam, Yeng Ming, Hippalgaonkar, Kedar   +3 more
openaire   +1 more source

Ba2PrPtO6: A novel double perovskite

Journal of Solid State Chemistry, 1992
The structure of the Ba 2 PrPtO 6 compound has been determined by X-ray powder diffraction and profile analysis and has been confirmed by TEM and HREM. The structure of this material is made up of alternating [PtO 6 ] and [PrO 6 ] octahedra along the three a, b , and c directions. Magnetic properties are also presented and discussed.
U. Amador, C.J.D. Hetherington, E. Moran, M.A. Alario-Franco   +3 more
openaire   +1 more source

Multiferroicity in double perovskite Y2CoMnO6

AIP Conference Proceedings, 2012
We have synthesized the double perovskite Y2CoMnO6. The crystal structure is identified to be monoclinic (space group P21/n). We report detailed analysis of this material using XRD, magnetization, resistivity and dielectric constant measurements. A material from the same series, Lu2CoMnO6 has been reported to have E-type antiferromagnetic structure in ...
G. Sharma, J. Saha, S. Patnaik
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Magnetoresistance stories of double perovskites

Pramana, 2015
Tunnelling magnetoresistance (TMR) in polycrystalline double perovskites has been an important research topic for more than a decade now, where the nature of the insulating tunnel barrier is the core issue of debate. Other than the nonmagnetic grain boundaries as conventional tunnel barriers, intragrain magnetic antiphase boundaries (APB) as well as ...
ABHISHEK NAG, SUGATA RAY
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Magnetoresistance in the Double Perovskite Sr2CrMoO6

Journal of Solid State Chemistry, 2000
Abstract The double perovskite Sr 2 CrMoO 6 with Cr 3+ –O–Mo 5+ pairs is ferrimagnetic ( T N =450 K), but there is considerable site disorder. The disorder appears to be responsible for the low value of magnetization. At 5 or 6 T, the negative magnetoresistance (MR) is 2 FeMoO 6 which shows MR upto 27%. Tunneling magnetoresistance behavior of Sr
Arulraj, Anthony, Ramesha, K, Gopalkrishana, J, Rao, CNR   +3 more
openaire   +1 more source

ESR of double-perovskite Sr2FeMoO6

Physica B: Condensed Matter, 2002
Abstract We present an ESR study of Sr 2 FeMoO 6 in the paramagnetic region. A single line at g ≈2 was associated with Fe 3+ ions. The intensity follows Curie–Weiss law in the whole T range. For T >500 K a secondary line is attributed to ferromagnetic (FM) impurities.
M.T Causa, A Butera, M Tovar, J Fontcuberta   +3 more
openaire   +1 more source

LaSrMnCoO6: a new cubic double perovskite oxide

Journal of Solid State Chemistry, 2003
Abstract Single-phase polycrystalline powder samples of the double perovskite oxide LaSrMnCoO6 were synthesized by the Pechini (citrate-gel) technique. The structural, magnetic and electrical properties of the obtained powders were investigated by X-ray diffraction, electron microscopy, dc magnetization, ac susceptibility and dc resistivity ...
Androulakis, J., Katsarakis, N., Giapintzakis, John, Vouroutzis, N., Pavlidou, E., Chrissafis, K., Polychroniadis, E. K., Perdikatsis, V., Androulakis, J., Katsarakis, N., Giapintzakis, John, Vouroutzis, N., Pavlidou, E., Chrissafis, K., Polychroniadis, E. K., Perdikatsis, V.   +15 more
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Iron Valence in Double Perovskites

2002
The valence state of iron in the compounds Ca2FeMoO6, Sr2FeMoO6 Ba2FeMoO6, Ca2FeReO6, Sr2FeReO6, Sr2FeMo1−xW x O6 (x=0.2 and 0.4), and (Sr2−xLax)FeMoO6 (x=0.5 and 0.7), which have been prepared using ceramic and combustion techniques, has been studied using 37Fe Mossbauer spectroscopy.
A. P. Douvalis, M. Venkatesan, J. M. D. Coey   +2 more
openaire   +1 more source

Ab initio study of double perovskites Ba2DySbO6

AIP Conference Proceedings, 2016
First principle study of the electronic band structure of Ba2DySbO6 synthesied by the solid state reaction technique have been performed within the framework of density function theory using WIEN2K. It has been shown in the absence of electron-electron interaction (U=0), BaDySO6 behaves like a half-metal.
Golak Mondal, D. Jha, A. K. Himanshu, J. Lahiri, B. K. Singh, Uday Kumar, Rajyavardhan Ray   +6 more
openaire   +1 more source

Defect processes in orthorhombic LnBaCo2O5.5 double perovskites

Physical Chemistry Chemical Physics, 2011
Static atomistic simulations based on the Born model were used to investigate intrinsic defect processes in orthorhombic LnBaCo(2)O(5.5) (Ln = Y, La, Pr, Nd, Sm, Gd, Dy, Ho, Er, and Yb) double perovskites. It was found that Ln/Ba antisite disorder is the lowest energy defect reaction, with the large Ln cations giving rise to smaller antisite energies ...
I D, Seymour, A, Chroneos, J A, Kilner, R W, Grimes   +3 more
openaire   +2 more sources