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RESEARCH PRODUCT
Heat-capacity anomaly due to spin reorientation and thermodynamic functions of ErFeO3 and TmFeO3
Yuji MiyazakiYasuhisa YamamuraJ. MayerPhilipp GütlichHiroji KobayashiJürgen EnslingMichio SoraiKazuya SaitoBarbara Leśniewskasubject
Materials scienceCondensed matter physicsMössbauer spectroscopyCalorimetryQuadrupole splittingAtmospheric temperature rangeAnomaly (physics)Condensed Matter PhysicsAdiabatic processSpin (physics)Heat capacityElectronic Optical and Magnetic Materialsdescription
Abstract Heat capacities of orthoferrites, ErFeO 3 and TmFeO 3 , have been measured below room temperature by adiabatic calorimetry. A broad but definite anomaly due to the spin reorientation phenomenon was successfully detected in the expected temperature range (ca. 90 K). The results are compared with a vast anomaly reported for YbFeO 3 . The temperature dependence of the electric quadrupole splitting of the Fe nuclear levels was determined by Mossbauer spectroscopy through the spin reorientation. A heat capacity anomaly centered at 3.60 K due to the magnetic ordering of Er 3+ ions was clearly detected. Some Schottky anomalies were resolved and energy splittings involved were roughly estimated. Some thermodynamic functions are derived and tabulated.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2001-01-01 | Journal of Magnetism and Magnetic Materials |