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Thermomagnetic Properties of Dy 0.9 Ho 0.1 MnO 3 Multiferroics
Author(s) -
Naini Pavan Kumar,
Satapathy Jyotirmayee,
Abhinav Etyala Meher,
Srinivas Adiraj,
Raja Muthuvel Manivel
Publication year - 2020
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.202000138
Subject(s) - magnetic refrigeration , multiferroics , antiferromagnetism , materials science , heat capacity , ferroelectricity , thermomagnetic convection , condensed matter physics , ion , adiabatic process , magnetic field , magnetization , dielectric , thermodynamics , chemistry , physics , quantum mechanics , optoelectronics , organic chemistry
Holmium (Ho)‐doped DyMnO 3 multiferroic compound is prepared using conventional solid‐state reaction route, and X‐ray powder diffraction analysis is conducted to confirm the single‐phase structure. Coexistence of magnetic and electric behavior in case of multiferroics is analyzed by heat capacity measurements from low temperature (2 K) to room temperature (300 K) under different magnetic fields. Herein, the existence antiferromagnetic and ferroelectric phase transitions in this compound at <10, 18, and 40 K, respectively, is revealed, which are attributed to the structural ordering or alignment of Mn 3+ ions and R 3+ ions. The magnetocaloric effect of this sample is also studied from heat capacity measurements. A maximum magnetic entropy change (Δ S ) M of ≈6.3 J kg −1 K −1 and adiabatic temperature change (Δ T ) ad of 3–4 K is achieved in 0.1Ho‐doped compound for a magnetic field change of 5 T and useful for low‐temperature magnetic refrigeration applications.