Kumar, Pradeep; Ghara, Somnath; Rajeswaran, B.; Muthu, D. V. S.; Sundaresan, A.; Sood, A. K.(Pergamon-Elsevier Science Ltd, 2014)
We report a detailed magnetic, dielectric and Raman studies on partially disordered and biphasic double perovskite La2NiMnO6. DC and AC magnetic susceptibility measurements show two magnetic anomalies at T-C1 similar to ...
The complex oxide BiMnFe2O6 crystallizing in a centrosymmetric orthorhombic structure (Pbcm) is known to exhibit a spiral antiferromagnetic ordering at T-N similar to 212 K and an anomaly in magnetization at low temperature ...
Kumar, Nitesh; Raman, Natarajan; Sundaresan, A.(Wiley-V C H Verlag Gmbh, 2014)
Single phase cobalt disulfide (CoS2) nanoparticles were prepared by thermal decomposition of cobalt-thiourea complex at a low temperature (400 degrees C). CoS2 nanoparticles exhibit ferromagnetic ordering at 122 K below ...
Seikh, Md. Motin; Caignaert, V.; Sundaresan, A.; De, Chandan; Raveau, B.(Royal Society of Chemistry, 2014)
Ti-rich double perovskites LnCu(3-y)Ti(2-x)Mn(2+x+y)O(12) have been synthesized at normal pressure, with a wide homogeneity range, 0 < x < 0.5 and 0 < y <= 1. ALL these oxides are ferrimagnetic, with T-C ranging from 160 ...
Oro-Sole, Judith; Clark, Lucy; Kumar, Nitesh; Bonin, William; Sundaresan, A.; Attfield, J. Paul; Rao, C. N. R.; Fuertes, Amparo(Royal Society of Chemistry, 2014)
The rare earth vanadium oxynitride perovskites RVO3-xNx (R = La, Pr, Nd; 0 <= x <= 1) have been prepared by treatment of RVO4 precursors in NH3. The ammonolysis reactions proceed through an initial reduction of RVO4 ...
Donakowski, Martin D.; Lu, Hongcheng; Gautier, Romain; Saha, Rana; Sundaresan, A.; Poeppelmeier, Kenneth R.(Wiley-V C H Verlag Gmbh, 2014)
The potassium vanadium oxide-fluoride phase -KVOF3 was prepared by in-situ reduction with hydrothermal methods and characterized by single-crystal X-ray diffraction and magnetic susceptibility measurements. The compound ...
De, Chandan; Kim, Tai Hoon; Kim, Kee Hoon; Sundaresan, A.(Royal Society of Chemistry, 2014)
The ordered perovskites, NaLnMnWO(6) (Ln = La, Nd, Tb), are reported to exhibit simultaneous ordering of A-site cations (Na and Ln) in layered arrangement and B-site cations (Mn and W) in rock salt structure. They have ...
Thomas, Syju; Rahul, S.; Devadas, K. M.; Varghese, Neson; Sundaresan, A.; Syamaprasad, U.(Elsevier Science Sa, 2014)
MgB2 superconductor sample co-doped with nano-carbon (n-C) and nano-silica (n-SiO2) is prepared and its structural and superconducting properties are compared with pure and n-C and nano SiC (n-SiC) mono-doped samples. ...
Mua, N. T.; Sundaresan, A.; Man, N. K.; Dung, D. D.(Indian Academy of Sciences, 2014)
We report electrical transport properties of Bi2Sr2Ca2Cu3O10+x(Bi-2223) superconducting thin filmsfabricated by pulsed-laser deposition on SrTiO3 substrate. The aim of the study was to investigate the influence of preparation ...
Saha, Rana; Sundaresan, A.; Rao, C. N. R.(Royal Society of Chemistry, 2014)
A few oxides such as YMnO3, TbMnO3, YMn2O5 and BiFeO3 constituted the small family of well-characterized multiferroics until recently, but this area of research has been enlarged significantly due to the advent of a novel ...
Sandoval, Stefania; Kumar, Nitesh; Sundaresan, A.; Rao, C. N. R.; Fuertes, Amparo; Tobias, Gerard(Wiley-V C H Verlag Gmbh, 2014)
Nitrogen-doped reduced graphene oxide (N-doped RGO) samples with a high level of doping, up to 13 wt.%, have been prepared by annealing graphene oxide under a flow of pure ammonia. The presence of nitrogen within the ...
Sharada, G.; Mahale, Pratibha; Kore, Bhushan P.; Mukherjee, Somdutta; Pavan, Mysore S.; De, Chandan; Ghara, Somnath; Sundaresan, A.; Pandey, Anshu; Row, Tayur N. Guru; Sarma, D. D.(American Chemical Society, 2016)
In view of the continued controversy concerning the polar/nonpolar nature of the hybrid perovskite system, CH3NH3PbI3, we report the first investigation of a time resolved pump probe measurement of the second harmonic ...
We report the occurrence of a magnetodielectric effect and its correlation with structure and magnetism in the A-site ordered chromate spinel oxides LiMCr4O8 (M = Ga, In). In addition to magnetic and dielectric measurements, ...
Saha, Rana; Ghara, Somnath; Suard, Emmanuelle; Jang, Dong Hyun; Kim, Kee Hoon; Ter-Oganessian, N. V.; Sundaresan, A.(American Physical Society, 2016)
We report the discovery of the linear magnetoelectric effect in a family of spinel oxides, Co3O4 and MnB2O4 (B = Al, Ga) with simple collinear antiferromagnetic spin structure. An external magnetic field induces a dielectric ...
Haque, Zeba; Thakur, Gohil S.; Ghara, Somnath; Gupta, L. C.; Sundaresan, A.; Ganguli, A. K.(Elsevier Science Bv, 2016)
We have synthesized a new crystallographically ordered quaternary Heusler alloy, MuNiCuSb. The crystal structure of the alloy has been determined by Rietveld refinement of the powder X-ray diffraction data. This alloy ...
Saha, Rana; Sundaresan, A.; Sanyal, Milan K.; Rao, C. N. R.; Orlandi, Fabio; Manuel, Pascal; Langridge, Sean(American Physical Society, 2016)
High-resolution neutron powder diffraction is used to demonstrate that the Eu2+ moments in EuZrO3 are oriented along the c axis, in contrast to EuTiO3 where the moments lie within the ab plane. By applying a Landau theory ...
Saha, Rana; Vasu, K.; Negi, D. S.; Datta, Ranjan; Sundaresan, A.; Rao, C. N. R.(Wiley-V C H Verlag Gmbh, 2016)
Epitaxial thin films of ferromagnetic La0.7Sr0.3MnO3 (LSMO) and charge-ordered, antiferromagnetic Y0.5Ca0.5MnO3 (YCMO) were deposited on SrTiO3 (100) substrates by pulsed laser deposition (PLD). The heterostructure undergoes ...
Classical magnetoresistance generally follows the quadratic dependence of the magnetic field at lower field and finally saturates when field is larger. Here, we report the large positive non-saturating linear magnetoresistance ...
De, Chandan; Ghara, Somnath; Sundaresan, A.(Pergamon-Elsevier Science Ltd, 2015)
Pyro-current measurements have been widely used to study ferroelectric properties in multiferroic materials. However, determination of intrinsic polarization by this method is not straightforward because of leakage current ...
Aswathy, P. M.; Anooja, J. B.; Varghese, Neson; Chandrakanth, C. K.; Kumar, N. Devendra; Sundaresan, A.; Syamaprasad, U.(Royal Society of Chemistry, 2015)
The influence of rare earth (RE - Ce, Gd) doping at the Nd site in the NdFeAsO0.7F0.3 superconductor wherein Ce and Gd have ionic radii in the order Ce > Nd > Gd is investigated. The structural and superconductivity ...