Magnetic properties of tetravalent praseodymium perovskites BaPrO{sub 3}, BaCe{sub y}Pr{sub 1-y}O{sub 3}, and Sr{sub y}Ba{sub 1-y}PrO{sub 3}

Journal Article · Tue Oct 31 23:00:00 EST 1995 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/0022-4596(95)80059-X· OSTI ID:486282

Hinatsu, Yukio ^[1]

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1. Japan Atomic Energy Research Institute, Ibaraki (Japan)

Tetravalent praseodymium perovskites BaPrO{sub 3}, BaCe, Pr{sub 1-y}O{sub 3}, and Sr{sub y}Ba{sub 1-y}PrO{sub 3} were prepared, and their magnetic susceptibilities were measured in the temperature range between 4.2 and 300 K. Magnetic ordering found in the BaPrO{sub 3} (the transition temperature is 11.6 K) is weakened with substitution of Sr for Ba and much more weakened with substitution of Ce for Pr. Above this transition temperature, the susceptibility decreases anomalously with increasing temperature. A magnetic hysteresis was found at 4.5 K for all the compounds studied here. The magnetic susceptibility above the transition temperature is composed of a Curie-Weiss term associated with a small effective magnetic moment of Pr{sup 4+} and a large temperature-independent paramagnetism. The effective magnetic moment of the Pr{sup 4+} ion in Sr{sub y}Ba{sub 1-y}PrO{sub 3} increases with strontium concentration (y). This result is in accordance with the result obtained from the electron paramagnetic resonance spectrum of Pr{sup 4+} doped in Sr{sub y}Ba{sub 1-y}CeO{sub 3}.

• OSTI ID: 486282
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 2 Vol. 119; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
CERIUM OXIDES
ELECTRON SPIN RESONANCE
MAGNETIC MOMENTS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
PRASEODYMIUM OXIDES
STOICHIOMETRY
STRONTIUM OXIDES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K