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RESEARCH PRODUCT
The Effect of Technological Factors on the Synthesis of PbMg 1/3 Nb 2/3 O 3
L. ShebanovsK. BormanisM. LivinshM. KalnbergaMaija AntonovaAnna KalvaneI. BranteMaruta Dambekalnesubject
Materials scienceMagnesiumSolid phase reactionsAnalytical chemistryPyrochlorechemistry.chemical_elementengineering.materialCondensed Matter PhysicsFerroelectricityElectronic Optical and Magnetic MaterialschemistryPhase (matter)engineeringColumbiteStoichiometryPerovskite (structure)description
Conventional technique of solid phase reactions allows one to obtain PbMg 1/3 Nb 2/3 O 3 material with about 20 vol.% of the pyrochlore phase. The latter can be reduced to 5 vol.% by Swartz-Shrout two-stage solid state reaction via MgNb 2 O 6 having the columbite structure. A single-phase perovskite product can be obtained by by the two-stage columbite method from mixtures containing 0.2 mol. parts of overstoichiometric MgO. The best results are obtained by using magnesium carbonate hydroxide pentahydrate (MgCO 3 ) 4 ·Mg(OH) 2 ·5H 2 O as the magnesium source. The modified route yields stoichiometric single-phase PMN.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-01-01 | Ferroelectrics |