The spin Hall magnetoresistance (SMR) at Pt/ Y3Fe5O12(YIG) interfaces with (100)-, (110)- and (111)-oriented YIG films was studied. Before that, high-quality YIG films were fabricated on Gd3Ga5O12 (GGG) substrates by pulsed-laser deposition and the structure, magnetic property and damping of YIG films with different crystallographic orientations were compared and analyzed. By angle-dependent magnetoresistance (ADMR) measurements in neighboring Pt layer of YIG films, an anisotropy of SMR was observed. The spin mixing conductance (SMC) at different Pt/YIG interfaces was calculated according to the model of SMR. It was found that Pt/YIG (100) and Pt/YIG(110) interfaces have larger SMC than that of Pt/YIG(111) interface due to the relatively larger surface roughness, which could provide a reference for optimizing the performance of magnetic transport property in magnonic devices involving Pt/YIG interface.

研究了Pt / Y3Fe5O12（YIG）与（100），（110）和（111）取向的YIG薄膜界面处的自旋霍尔磁阻（SMR）。在此之前，通过脉冲激光沉积在Gd3Ga5O12（GGG）衬底上制备了高质量的YIG膜，并对不同晶体取向的YIG膜的结构，磁性和阻尼进行了比较和分析。通过在YIG膜的相邻Pt层中测量与角度相关的磁阻（ADMR），可以观察到SMR的各向异性。根据SMR模型计算了不同Pt / YIG界面的自旋混合电导（SMC）。结果发现，由于相对较大的表面粗糙度，Pt / YIG（100）和Pt / YIG（110）界面的SMC大于Pt / YIG（111）界面的SMC，