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<p>In this work, we fabricated a Yb<sub>2</sub>TiO<sub>5</sub> oxide and investigated its magnetic and low-temperature magnetocaloric (MC) properties. The Yb<sub>2</sub>TiO<sub>5</sub> oxide possesses a cubic structure (space group <i>Fm-3m</i>), without distinct magnetic ordering down to 2&#xa0;K. The constituent elements in Yb<sub>2</sub>TiO<sub>5</sub> oxide are all distributed uniformly and with the Yb<sup>3+</sup>, Ti<sup>4+</sup>, and O<sup>2-</sup> valence states, respectively. The MC effect and performance of Yb<sub>2</sub>TiO<sub>5</sub> oxide were assessed by maximum magnetic entropy changes, refrigerant capacity, and temperature-averaged entropy change (in lifts of 5&#xa0;K), revealing values of 13.10/5.94&#xa0;J/kg K, 96.84/23.23&#xa0;J/kg, and 12.02/4.48&#xa0;J/kg K under magnetic field variations of 0–7/0–3&#xa0;T, respectively. These MC parameters of Yb<sub>2</sub>TiO<sub>5</sub> oxide are comparable to most reported Yb-based and some updated <i>RE</i>-based magnetic oxides with a notable MC effect and prominent performance, rendering the Yb<sub>2</sub>TiO<sub>5</sub> oxide suitable for active cooling applications.</p>

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Magnetic Properties and Low-Temperature Magnetocaloric Effect in Yb2TiO5 Oxide

  • 期刊论文

  • 发表日期：

    2025年2月19日

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  • Fuyu Yang,
  • Jinyi Wang,
  • Ran Ji,
  • Yikun Zhang

摘要

In this work, we fabricated a Yb2TiO5 oxide and investigated its magnetic and low-temperature magnetocaloric (MC) properties. The Yb2TiO5 oxide possesses a cubic structure (space group Fm-3m), without distinct magnetic ordering down to 2 K. The constituent elements in Yb2TiO5 oxide are all distributed uniformly and with the Yb3+, Ti4+, and O2- valence states, respectively. The MC effect and performance of Yb2TiO5 oxide were assessed by maximum magnetic entropy changes, refrigerant capacity, and temperature-averaged entropy change (in lifts of 5 K), revealing values of 13.10/5.94 J/kg K, 96.84/23.23 J/kg, and 12.02/4.48 J/kg K under magnetic field variations of 0–7/0–3 T, respectively. These MC parameters of Yb2TiO5 oxide are comparable to most reported Yb-based and some updated RE-based magnetic oxides with a notable MC effect and prominent performance, rendering the Yb2TiO5 oxide suitable for active cooling applications.