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Electronic transport and magnetic studies of La1−x Ca x−0.08Sr0.04Ba0.04MnO3

Lanthanum based mixed valence manganite system La1?x Ca x?0.08Sr0.04Ba0.04MnO3 (LCSBMO; x=0.15, 0.24 and 0.33) synthesized through the sol?gel route is systematically investigated in this paper.

出版机构:Elsevier Science

刊物名称:Journal of Physics and Chemistry of Solids

出版时间:2010

ISSN:0022-3697

数据源:报刊文摘

Excess titanium in barium titanate nanoparticles directly synthesized from solution

The formation mechanism of excess titanium in BaTiO3 nanoparticles is different from that in BaTiO3 bulk materials. In this study, we analyzed the concentration of excess titanium in BaTiO3 nanoparticles, which were directly synthesized from solution at 65?

出版机构:Elsevier Science

刊物名称:Journal of Physics and Chemistry of Solids

出版时间:2010

ISSN:0022-3697

数据源:报刊文摘

Influence of the B-site ordering on the magnetic properties of the new La3Co2MO9 double perovskites with M=Nb or Ta

Double perovskites La3Co2NbO9 and La3Co2TaO9 have been prepared by both solid state and sol?gel synthesis. The crystal structures have been studied from X-ray and neutron powder diffraction data.

出版机构:Elsevier Science

刊物名称:Materials Research Bulletin

出版时间:2011

ISSN:0025-5408

数据源:报刊文摘

Effect of preparation temperature on the morphology, crystal structure and electrochemical properties of LiV3O8 powders prepared by spray pyrolysis

? The properties of LiV3O8 prepared by spray pyrolysis at various temperatures are investigated. ? The LiV3O8 powders prepared at 600, 900 and 1000?C had spherical shapes and fine sizes. ? The LiV3O8 powders with special shape and fine size had high capacities and good cycle properties.

出版机构:Elsevier Science

刊物名称:Materials Chemistry and Physics

出版时间:2011

ISSN:0254-0584

数据源:报刊文摘

Synthesis and electrical properties of scheelite Ca1−x Sm x MoO4+δ solid electrolyte ceramics

Scheelite-type Ca1?x Sm x MoO4+? electrolyte ceramics can be considered as one of the best candidates to replace the YSZ electrolyte materials for SOFCs because of their high oxide ion conduction.Scheelite-type Ca1?x Sm x MoO4+? electrolyte powders were prepared by the sol?

出版机构:Elsevier Science

刊物名称:Materials Research Bulletin

出版时间:2011

ISSN:0025-5408

数据源:报刊文摘

Characterization, sintering and dielectric properties of nanocrystalline zinc oxide prepared by a citric acid-based combustion route

Nanosized zinc oxide has been synthesized through a novel single step solution combustion route using citric acid as fuel. The X-ray diffraction (XRD) analysis revealed that the synthesized ZnO nanopowder has the pure wurtzite structure.

出版机构:Elsevier Science

刊物名称:Journal of Physics and Chemistry of Solids

出版时间:2011

ISSN:0022-3697

数据源:报刊文摘

Effect of BiFeO3 additions on the dielectric and piezoelectric properties of (K0.44Na0.52Li0.04)(Nb0.84Ta0.1Sb0.06)O3 ceramics

(1? x) (K0.44Na0.52Li0.04)(Nb0.84Ta0.1Sb0.06)O3 ? x BiFeO3 (x =0, 0.002, 0.004, 0.006, 0.008, 0.01) lead-free piezoelectric ceramics were prepared by the conventional ceramic processing. The compositional dependence of the phase structure and the electrical properties of the ceramics were studied.

出版机构:Elsevier Science

刊物名称:Materials Research Bulletin

出版时间:2010

ISSN:0025-5408

数据源:报刊文摘

Double-layered Aurivillius-type ferroelectrics with magnetic moments

This tilt modifies the ferroelectric displacement of the (Nb,Ti) towards the octahedral faces. This provides a mechanism to systematically modify the polarization. Mn-substitution on the (Nb,Ti) site for Ln=Bi is homogeneous up to x =0.2. The magnetic moments of Ln do not order down to 5K.

出版机构:Elsevier Science

刊物名称:Materials Research Bulletin

出版时间:2010

ISSN:0025-5408

数据源:报刊文摘

Low-temperature synthesis of AlN powder with multicomponent additive systems by carbothermal reduction–nitridation method

lN powders were synthesized at low temperatures (1300 and 1400?C) by the carbothermal reduction?nitridation (CRN) method using multicomponent additive systems. The synthesis treatments were conducted in a graphite furnace with flowing nitrogen gas between 1200 and 1500?

出版机构:Elsevier Science

刊物名称:Materials Research Bulletin

出版时间:2010

ISSN:0025-5408

数据源:报刊文摘

Freeze casting of aqueous coal fly ash/alumina slurries for preparation of porous ceramics

porous mullite-matrix composite with a bimodal pore structure has been prepared by a freeze casting route using water/coal fly slurry system. The top and bottom parts of the sintered freeze cast body consisted of solid particles and micropores, which were irregularly distributed.

出版机构:Elsevier Science

刊物名称:Journal of Physics and Chemistry of Solids

出版时间:2010

ISSN:0022-3697

数据源:报刊文摘