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<p>In this study, the structural, magnetic, and magnetocaloric properties of Pr<sub>0.9</sub>Sr<sub>0.1</sub>Mn<sub>0.9</sub>Ti<sub>0.1</sub>O<sub>3</sub> were investigated. The sample was synthesized by the solid-state method. X-ray powder diffraction and magnetic measurements were used to investigate structure and magnetism, respectively. Rietveld analysis showed that the sample crystallized in the orthorhombic system with space group Pnma. Magnetic measurements were used to determine the Curie temperature and the spontaneous magnetization based on the magnetization as a function of temperature M(T) and applied magnetic field M(H). The analysis of the magnetic measurements shows the presence of a transition from a ferromagnetic state at low temperature (FM) to a paramagnetic state at high temperature (PM) for a Curie temperature <i>T</i><sub>C</sub>. Temperature-dependent magnetization measurements and Arrott analysis reveal second-order ferromagnetic transitions in the sample. Magnetic entropy change <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10948_2025_7020_Article_IEq1.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="50" /> </InlineMediaObject> <EquationSource Format="TEX">\(\left|\Delta {S}_{\text{M}}\right|\)</EquationSource> <EquationSource Format="MATHML"><math> <mfenced close="|" open="|"> <mi mathvariant="normal">Δ</mi> <msub> <mi>S</mi> <mtext>M</mtext> </msub> </mfenced> </math></EquationSource> </InlineEquation> was calculated using the Maxwell relation method. The maximum values of entropy |<InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10948_2025_7020_Article_IEq2.gif" Format="GIF" Height="20" Rendition="HTML" Resolution="72" Type="Linedraw" Width="57" /> </InlineMediaObject> <EquationSource Format="TEX">\(\Delta {S}_{\text{M}}^{\text{max}}|\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi mathvariant="normal">Δ</mi> <msubsup> <mi>S</mi> <mrow> <mtext>M</mtext> </mrow> <mtext>max</mtext> </msubsup> <mrow> <mo stretchy="false">|</mo> </mrow> </mrow> </math></EquationSource> </InlineEquation> are 0.6055 to 2.6004&#xa0;J/kg K with an applied magnetic field of 1 to 5&#xa0;T. At these values of the magnetic field, the relative cooling power (RCP) values are 31.3 to 211.21&#xa0;J/kg. At high temperatures, a large change in magnetic entropy was observed in the sample. Our results on magnetocaloric properties suggest that the Pr<sub>0.9</sub>Sr<sub>0.1</sub>Mn<sub>0.9</sub>Ti<sub>0.1</sub>O<sub>3</sub> compound can be used in magnetic refrigeration applications.</p>

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Effect of 10% Ti Doping on the Structural, Magnetic, and Magnetocaloric Properties of Pr0.9Sr0.1Mn0.9Ti0.1O3

  • 期刊论文

  • 发表日期：

    2025年7月23日

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  • S. Elaskri,
  • M. Ellouze,
  • Ayten Ates,
  • E. K. Hlil,
  • A. Hakamy

摘要

In this study, the structural, magnetic, and magnetocaloric properties of Pr0.9Sr0.1Mn0.9Ti0.1O3 were investigated. The sample was synthesized by the solid-state method. X-ray powder diffraction and magnetic measurements were used to investigate structure and magnetism, respectively. Rietveld analysis showed that the sample crystallized in the orthorhombic system with space group Pnma. Magnetic measurements were used to determine the Curie temperature and the spontaneous magnetization based on the magnetization as a function of temperature M(T) and applied magnetic field M(H). The analysis of the magnetic measurements shows the presence of a transition from a ferromagnetic state at low temperature (FM) to a paramagnetic state at high temperature (PM) for a Curie temperature TC. Temperature-dependent magnetization measurements and Arrott analysis reveal second-order ferromagnetic transitions in the sample. Magnetic entropy change \(\left|\Delta {S}_{\text{M}}\right|\) Δ S M was calculated using the Maxwell relation method. The maximum values of entropy | \(\Delta {S}_{\text{M}}^{\text{max}}|\) Δ S M max | are 0.6055 to 2.6004 J/kg K with an applied magnetic field of 1 to 5 T. At these values of the magnetic field, the relative cooling power (RCP) values are 31.3 to 211.21 J/kg. At high temperatures, a large change in magnetic entropy was observed in the sample. Our results on magnetocaloric properties suggest that the Pr0.9Sr0.1Mn0.9Ti0.1O3 compound can be used in magnetic refrigeration applications.