Synthesis of doped rare earth manganate perovskite crystals using fused salt electrolysis

Journal Article · Thu May 01 04:00:00 EDT 1997 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1006/jssc.1997.7403· OSTI ID:577488

McCarroll, W H ^[1]; Ramanujachary, K V ^[2]; Greenblatt, M ^[3]

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1. Rider Univ., Lawrenceville, NJ (United States)
2. Rugers, State Univ. of New Jersey, Piscataway, NJ (United States)
3. Rutgers, State Univ. of New Jersey, Piscataway, NJ (United States)

A facile method for the synthesis of doped lanthanum manganate crystals, suitable for the measurement of electrical and magnetic properties, is presented. Mixtures of sodium molybdate and molybdenum(VI) oxide are used as a solvent to which La{sub 2}O{sub 3}, MnCO{sub 3}, and SrMoCO{sub 4} are added as solutes which are then electrolyzed at 800-1040{degrees}C for varying lengths of time with Pt electrodes. Well-formed cubic crystals, with edge dimensions up to 1.5 mm, form at the anode. Magnetization measurements show a transition to the ferromagnetic state in the temperature range {approximately}250-320 K, depending on the amount of aliovalent doping at the La sites. An insulator-to-metal transition is also observed in the vicinity of the ferromagnetic ordering temperature.

• OSTI ID: 577488
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 2 Vol. 130; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CRYSTALS
ELECTRIC CONDUCTIVITY
ELECTROLYSIS
LANTHANUM OXIDES
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MANGANESE OXIDES
MIXTURES
PEROVSKITE
STRONTIUM OXIDES
SYNTHESIS