The magnetic transition from antiferromagnetism to ferromagnetism (AFM-FM) in EuTiO₃ provides the feasibility of regulating its magnetic properties. Foreign element substitution has been proved to be an effective way to achieve AFM-FM switching and enhanced magnetocaloric effect (MCE) in EuTiO₃ system. In this study, a series of Zn substituted Eu(Ti,Zn)O₃ perovskites were synthesized, the crystal structure, magnetic properties, and MCE were investigated. All the compounds crystallize in a pure cubic perovskite phase with the space group Pm3m, and undergo a second-order phase transition at the ordering temperature 6.0 K. The substitution of Zn can significantly regulate the magnetic properties and enhance the ferromagnetic coupling, thus leading to an enhanced MCE in the Eu(Ti,Zn)O₃ compounds. Under field change of 0–1, 0–2, and 0–5 T, the $-\Delta S_{\mathrm{M}}^{\max }$ values are 10.3, 21.4, and 38.5 J·kg⁻¹·K⁻¹ for EuTi_0.9375Zn_0.0625O₃, 10.8, 22.7, and 41.1 J·kg⁻¹·K⁻¹ for EuTi_0.875Zn_0.125O₃, 12.5, 25.3, and 45.0 J·kg⁻¹·K⁻¹ for EuTi_0.8125Zn_0.1875O₃, respectively. Besides, the compounds exhibit prominent refrigeration capability and temperature averaged entropy change. The considerable magnetocaloric performances make the Eu(Ti,Zn)O₃ perovskites potential candidate materials for cryogenic magnetic refrigeration.

EuTiO ₃中从反铁磁性到铁磁性（AFM-FM）的磁性转变为调节其磁性提供了可行性。_{外来元素替代已被证明是在EuTiO 3}体系中实现AFM-FM切换和增强磁热效应(MCE)的有效途径。本研究合成了一系列Zn取代的Eu(Ti,Zn)O ₃钙钛矿，对其晶体结构、磁性和MCE进行了研究。所有化合物均以纯立方钙钛矿相结晶，空间群为Pm 3 m, 并在有序温度 6.0 K 处发生二级相变。Zn 的取代可以显着调节磁性并增强铁磁耦合，从而导致 Eu(Ti,Zn)O ₃化合物中的 MCE 增强。在 0-1、0-2 和 0-5 T 的场变化下，$-\Delta {\mathrm{小号}}_{\mathrm{米}}^{\mathrm{最大限度}}$EuTi _0.9375 Zn _0.0625 O ₃的值为 10.3、21.4和 38.5 J·kg ^-1 · K ^-1，EuTi _0.875 Zn _0.125 O ₃、12.5的值为 10.8、22.7和 41.1 J·kg ^-1 ·K ^-1 ， EuTi _0.8125 Zn _0.1875 O ₃分别为25.3和45.0 J·kg ^-1 ·K ^{-1 。}此外，这些化合物表现出显着的制冷能力和温度平均熵变。可观的磁热性能使 Eu(Ti,Zn)O ₃钙钛矿是低温磁制冷的潜在候选材料。