Synthesis of Doped Rare Earth Manganate Perovskite Crystals Using Fused Salt Electrolysis

W. H. McCarroll; K. V. Ramanujachary; M. Greenblatt

doi:10.1006/jssc.1997.7403

Synthesis of Doped Rare Earth Manganate Perovskite Crystals Using Fused Salt Electrolysis

W. H. McCarroll, K. V. Ramanujachary, M. Greenblatt

Chemistry

Research output: Contribution to journal › Editorial › peer-review

15 Scopus citations

Abstract

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 ₂ O ₃ , MnCO ₃ , and SrMoCO ₄ are added as solutes which are then electrolyzed at 800-1040°C for varying lengths of time with Pt electrodes. Well-formed cubic crystals, with edge dimensions up to 1.5mm, form at the anode. Magnetization measurements show a transition to the ferromagnetic state in the temperature range ~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.

Original language	English (US)
Pages (from-to)	327-329
Number of pages	3
Journal	Journal of Solid State Chemistry
Volume	130
Issue number	2
DOIs	https://doi.org/10.1006/jssc.1997.7403
State	Published - May 1997

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1006/jssc.1997.7403

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title = "Synthesis of Doped Rare Earth Manganate Perovskite Crystals Using Fused Salt Electrolysis",

abstract = " 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 2 O 3 , MnCO 3 , and SrMoCO 4 are added as solutes which are then electrolyzed at 800-1040°C for varying lengths of time with Pt electrodes. Well-formed cubic crystals, with edge dimensions up to 1.5mm, form at the anode. Magnetization measurements show a transition to the ferromagnetic state in the temperature range ~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.",

author = "McCarroll, {W. H.} and Ramanujachary, {K. V.} and M. Greenblatt",

year = "1997",

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journal = "Journal of Solid State Chemistry",

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T1 - Synthesis of Doped Rare Earth Manganate Perovskite Crystals Using Fused Salt Electrolysis

AU - McCarroll, W. H.

AU - Ramanujachary, K. V.

AU - Greenblatt, M.

PY - 1997/5

Y1 - 1997/5

N2 - 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 2 O 3 , MnCO 3 , and SrMoCO 4 are added as solutes which are then electrolyzed at 800-1040°C for varying lengths of time with Pt electrodes. Well-formed cubic crystals, with edge dimensions up to 1.5mm, form at the anode. Magnetization measurements show a transition to the ferromagnetic state in the temperature range ~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.

AB - 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 2 O 3 , MnCO 3 , and SrMoCO 4 are added as solutes which are then electrolyzed at 800-1040°C for varying lengths of time with Pt electrodes. Well-formed cubic crystals, with edge dimensions up to 1.5mm, form at the anode. Magnetization measurements show a transition to the ferromagnetic state in the temperature range ~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.

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Synthesis of Doped Rare Earth Manganate Perovskite Crystals Using Fused Salt Electrolysis

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