Y2 Zr2 O7 -doped with Eu3+ and Sm3+ phosphors were prepared for the first time as multifunctional smart materials using a solid-state reaction method at 1400o C. Thermal behaviour, crystal structure, surface morphology, and elemental analysis were characterized using thermogravimetric (TG) and differential thermal (DTA) analyses, X-ray diffraction (XRD) and scanning electron microscope equipped with energy-dispersive X-ray spectroscopy (SEM-EDX). Experimental results revealed that both phosphors have a pyrochlore structure with a cubic crystal system. Photoluminescence properties were also measured and red emission was observed from Y1.90 Eu0.10 Zr2 O7 and Y1.90 Sm0.10 Zr2 O7 phosphors. Dielectric constant, loss tangent, piezoelectric charge constant, and Curie temperature of all the samples were determined using an LCR-meter, d33 -meter, and TG/DTA. Eu doping in Y2 Zr2 O7 resulted in a high dielectric constant (9.61) and low loss tangent (1.67%) values, whereas high piezoelectric charge constant (0.68 pC/N) and high Curie temperature (820°C) could be obtained using Sm-doped Y2 Zr2 O7 .

中文翻译：

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Y2 Zr2 O7烧绿石基多功能材料的光致发光和压电行为以及Eu3 +和Sm3的影响。

首次在1400oC下采用固态反应方法制备了掺有Eu3 +和Sm3 +荧光粉的Y2 Zr2 O7作为多功能智能材料。使用热重（TG）表征了热行为，晶体结构，表面形态和元素分析。差热分析（​​DTA），X射线衍射（XRD）和配有能量色散X射线光谱仪（SEM-EDX）的扫描电子显微镜。实验结果表明，两种荧光粉均具有具有立方晶体系统的烧绿石结构。还测量了光致发光特性，并且从Y1.90 Eu0.10 Zr2 O7和Y1.90 Sm0.10 Zr2 O7荧光粉观察到红色发射。所有样品的介电常数，损耗角正切，压电电荷常数和居里温度均使用LCR表，d33表，和TG / DTA。Eu掺杂在Y2 Zr2 O7中导致高介电常数（9.61）和低损耗正切（1.67％）值，而使用Sm可以获得高压电电荷常数（0.68 pC / N）和居里温度（820°C）掺杂的Y2 Zr2 O7。