Mild hydrothermal synthesis and magnetic properties of the manganates Pr{sub 1-x}Ca{sub x}MnO{sub 3}

Journal Article · Mon Jan 15 00:00:00 EST 2007 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2006.09.029· OSTI ID:21015633

Yan, Chen ^[1]; Hongming, Yuan ^[1]; Ge, Tian ^[1]; Ganghua, Zhang ^[1]

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1. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130023 (China)

The calcium-doped manganates, Pr{sub 1-x}Ca{sub x}MnO{sub 3} (x=0.39, 0.46, 0.70, 0.76), were synthesized as cube-shaped crystalline phases under mild hydrothermal conditions for the first time. The crystals could be grown in one step from solutions of metal salts and potassium hydroxide at temperatures {approx}240deg. C, and found to adopt perovskite-like structure (space group Pbnm). Samples were characterized by powder X-ray diffraction, scanning electron microscopy, inductively coupled plasma analysis and variable temperature dc/ac magnetic susceptibility. The studies indicate that formation of the materials is dependent on the alkalinity and composition of the initial reaction mixtures. The magnetic properties show spin-glass-like behavior due to competing ferromagnetic (FM) and antiferromagnetic (AFM) exchange interactions in Pr{sub 1-x}Ca{sub x}MnO{sub 3} with x=0.39, 0.46.

• OSTI ID: 21015633
• Journal Information: Journal of Solid State Chemistry, Vol. 180, Issue 1; Other Information: DOI: 10.1016/j.jssc.2006.09.029; PII: S0022-4596(06)00521-4; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANTIFERROMAGNETISM
CALCIUM COMPOUNDS
CRYSTALS
DOPED MATERIALS
EXCHANGE INTERACTIONS
HYDROTHERMAL SYNTHESIS
MAGNETIC SUSCEPTIBILITY
MANGANATES
ORTHORHOMBIC LATTICES
PEROVSKITE
SCANNING ELECTRON MICROSCOPY
SOLUTIONS
SPACE GROUPS
SPIN GLASS STATE
TEMPERATURE RANGE 0400-1000 K
X-RAY DIFFRACTION