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The temperature dependent ac and dc magnetization and heat capacity data of Ca$_3$CoIrO$_6$, a spin-chain compound crystallizing in a K$_4$CdCl$_6$-derived rhombohedral structure, show the features due to magnetic ordering of a…

Strongly Correlated Electrons · Physics 2009-11-10 S. Rayaprol , Kausik Sengupta , E. V. Sampathkumaran

The role of doping Fe on the structural, magnetic and dielectric properties of frustrated antiferromagnet YMn1-xFexO3 (x less than or equal to 0.5) has been investigated. The neutron diffraction analysis shows that the structure of these…

Materials Science · Physics 2014-05-28 Neetika Sharma , A. Das , S. K. Mishra , C. L. Prajapat , M. R. Singh , S. S. Meena

Distinctive effects of dopant valency is discussed using an impurity level 1% doping each of Cr$^{3+}$ and Ni$^{2+}$ in CaBaCo$_4$O$_7$. Through a comparative study of the magnetic and dielectric properties of multiferroic…

Strongly Correlated Electrons · Physics 2021-04-07 M. Islam , S. Adhikari , S. Pramanick , S. Chatterjee , A. Karmakar

We investigate the physical properties and electronic structure upon Cr-doping in the iron arsenide layers of BaFe2As2. This form of hole-doping leads to suppression of the magnetic/structural phase transition in BaFe2-xCrxAs2 for x > 0,…

The substitution of zinc for iron in YBaFe4O7 has allowed the oxide series YBaFe4-xZnxO7, with 0.40 < x < 1.50, belonging to the "114" structural family to be synthesized. These oxides crystallize in the hexagonal symmetry (P63mc), as…

Materials Science · Physics 2010-05-05 Tapati Sarkar , V. Pralong , V. Caignaert , B. Raveau

We present a systematic study on the heavily Cr doped iron pnictides BaFe$_{1.9-x}$Ni$_{0.1}$Cr$_{x}$As$_{2}$ by using elastic neutron scattering, high-resolution synchrotron X-ray diffraction (XRD), resistivity and Hall transport…

Pb-doping effect on physical properties of misfit-layered (Bi,Pb)-Sr-Co-O system, in which Co ions form a two-dimensional triangular lattice, was investigated in detail by electronic transport, magnetization and specific-heat measurements.…

Strongly Correlated Electrons · Physics 2009-11-07 T. Yamamoto , K. Uchinokura , I. Tsukada

Ca2-xLaxFeMoO6 double perovskite with La concentration x = 0 to 0.6 was synthesized using solid state sintering route. The standard techniques of XRD, SEM and EDX were applied to characterize the material. Crystal structure of the samples…

Materials Science · Physics 2009-10-11 I. Panneer Muthuselvam , Asok Poddar , R. N. Bhowmik

The presence of phonon instabilities that leads to the formation of charge modulated states in kagome metals has allowed their classification based on the atomic displacements. Here, we use diffuse and inelastic x-ray scattering, backed by…

Strongly Correlated Electrons · Physics 2025-08-20 A. Korshunov , C. A. Fuller , C. -Y. Lim , A. Kar , S. Roychowdhury , D. Chernyshov , C. Shekhar , A. Bosak , C. Felser , S. Blanco-Canosa

We report on the magnetic properties of geometrically frustrated K3CrO4, in which Cr5+ cations are arranged on a distorted pyrochlore lattice. The crystal structure, static and dynamic magnetic properties of the compound are investigated in…

Strongly Correlated Electrons · Physics 2021-07-08 Liliia D. Kulish , Graeme R. Blake

V$_{2}$O$_{5}$ in its $\omega$ phase (Li$_{3}$V$_{2}$O$_{5}$) with excess lithium is a potential alternative to the graphite anode for lithium-ion batteries at low temperature and fast charging conditions due to its safer voltage (0.6 V vs…

La1-xCaxMnO3+delta and La1-xNaxMnO3+delta samples with well defined cation molecularity and oxygen contents are analyzed with XRPD, electrical conductivity, electron paramagnetic resonance and static magnetization measurements. Point…

Iron-substitution in hexagonal YMnO3 causes isostructural intra-lattice changes exceeding those of the lattice cell, contrary to the effects of non-magnetic B-site dopants. Magnetization M(T) evidence antiferromagnetic (AFM) ordering of the…

Strongly Correlated Electrons · Physics 2014-09-23 Sonu Namdeo , A. M. Awasthi

Hole induced changes in the antiferromagnetic structure of a lightly Ca doped Gd:Y_{1-x}Ca_xBa_2Cu_3O_6 copper oxide single crystal with x~0.008 is investigated by Gd3+ electron spin resonance. Holes do not localize to Ca2+ ions above 2.5 K…

Superconductivity · Physics 2007-05-23 Andras Janossy , Titusz Feher , Andreas Erb

We theoretically study the carrier doping effect for magnetism in a stacked-kagome system $\rm{{Co}_3{Sn}_2{S}_2}$ based on an effective model and the Hartree-Fock method. We show the electron filling and temperature dependences of the…

Materials Science · Physics 2022-07-06 Akihiro Ozawa , Kentaro Nomura

Within the BaFe2As2 crystal lattice, we partially substitute thallium for barium and report the effects of interlayer coupling in Ba1-xTlxFe2As2 crystals. We demonstrate the unusual effects of magneto-elastic coupling and charge doping in…

Superconductivity · Physics 2016-11-11 A. S. Sefat , L. Li , H. B. Cao , M. A. McGuire , B. Sales , R. Custelcean , D. S. Parker

We present a detailed investigation of the hole (3\% Re) doping effect on the polycrystalline CeRu$_{2}$Al$_{10}$ sample by magnetization, heat capacity, resistivity, muon spin rotation ($\mu$SR), and neutron scattering (both elastic and…

Strongly Correlated Electrons · Physics 2014-11-26 A. Bhattacharyya , D. Khalyavin , D. T. Adroja , A. M. Strydom , A. D . Hillier , P. Manual , T. Takabatake , J. W. Taylor , C. Ritter

We examine the effect of small amounts of magnetic substituents in the $A$ sites of the frustrated spinels MgCr$_2$O$_4$ and ZnCr$_2$O$_4$. Specifically we look for the effects of spin and lattice disorder on structural changes accompanying…

The effects of Co2+ doping on the structural, magnetic and dielectric properties of the multiferroic frustrated antiferromagnet Mn3TeO6 have been investigated. Ceramic samples of the solid solution series Mn3-xCoxTeO6 were prepared by a…

Materials Science · Physics 2014-04-15 S. A. Ivanov , R. Mathieu , P. Nordblad , C. Ritter , R. Tellgren , N. Golubko , A. Mosunov , E. D. Politova , M. Weil

Resistivity, Hall effect and magnetoresistance have been investigated systematically on single crystals of Ba$_{1-x}$K$_x$Fe$_2$As$_2$ ranging from undoped to optimally doped regions. A systematic evolution of the quasiparticle scattering…

Superconductivity · Physics 2011-11-24 Bing Shen , Huan Yang , Zhao-Sheng Wang , Fei Han , Bin Zeng , Lei Shan , Cong Ren , Hai-Hu Wen