Journal of Pure and Applied Ultrasonics

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Evidence of Blocking Temperature of BaPrxFe2-xO4 Orthoferrites from In-situ Ultrasonic Measurement


Affiliations
1 INSA Visiting Scientist, Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore-560 012, India
2 of Physics, Sethu Institute of Technology, Kariapatti-626 115, India
3 Department of Physical and Inorganic Chemistry, Institute of Natural Sciences and Mathematics, Ural Federal University, 19 Mira street, Ekaterinburg-620002, Russian Federation
 

In this article, ultrasonic technique was applied for both the syntheses and characterize the BaPrxFe2-xO4 (x = 0.00. 0.02, 0.04, 0.06, 0.08 and 0.10) orthoferrites. The measured ultrasonics parameters for the prepared orthoferrite using through transmission technique were correlated with AC susceptibility (χac) measurement. The successfully doping of praseodymium ion in barium ferrite and their existence of the orthorhombic phase structure was confirmed through the respective diffraction peaks by using the X-ray diffraction (XRD). The crystalline size of the pristine barium ferrite (51 nm) was higher than that of praseodymium doped barium ferrite (28 nm). Curie temperature and blocking temperature of the BaPrxFe2-xO4 ferrite were explored through the temperature-dependent AC susceptibility (χac) and in situ ultrasonic measurements, respectively. The obtained results were compared and the blocking temperature (TB) measured from AC susceptibility is marked with a mid-point of anomaly in the temperature dependent in-situ ultrasonic measurement.

Keywords

Orthoferrites, Magnetic Properties, Curie Temperature, Structural Properties.
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  • Evidence of Blocking Temperature of BaPrxFe2-xO4 Orthoferrites from In-situ Ultrasonic Measurement

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Authors

K. Sakthipandi
INSA Visiting Scientist, Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore-560 012, India
R. Rajesh Kanna
of Physics, Sethu Institute of Technology, Kariapatti-626 115, India
Aslam Hossain
Department of Physical and Inorganic Chemistry, Institute of Natural Sciences and Mathematics, Ural Federal University, 19 Mira street, Ekaterinburg-620002, Russian Federation

Abstract


In this article, ultrasonic technique was applied for both the syntheses and characterize the BaPrxFe2-xO4 (x = 0.00. 0.02, 0.04, 0.06, 0.08 and 0.10) orthoferrites. The measured ultrasonics parameters for the prepared orthoferrite using through transmission technique were correlated with AC susceptibility (χac) measurement. The successfully doping of praseodymium ion in barium ferrite and their existence of the orthorhombic phase structure was confirmed through the respective diffraction peaks by using the X-ray diffraction (XRD). The crystalline size of the pristine barium ferrite (51 nm) was higher than that of praseodymium doped barium ferrite (28 nm). Curie temperature and blocking temperature of the BaPrxFe2-xO4 ferrite were explored through the temperature-dependent AC susceptibility (χac) and in situ ultrasonic measurements, respectively. The obtained results were compared and the blocking temperature (TB) measured from AC susceptibility is marked with a mid-point of anomaly in the temperature dependent in-situ ultrasonic measurement.

Keywords


Orthoferrites, Magnetic Properties, Curie Temperature, Structural Properties.

References