采用双靶磁控溅射共沉积方法制备Cu-W薄膜,其微观结构及形貌通过XRD、TEM和SEM方法测试,结果表明,Cu-W薄膜是由Cu固溶于W或W固溶于Cu的亚稳态固溶体组成,且随着W含量的增加,Cu-W薄膜依次形成面心立方fee结构的Cu基亚稳固溶体、fee和bee结构固溶体的双相区以及体心立方bee结构的W基亚稳固溶体,晶粒尺寸随溶质原子含量的增加而减小.这些亚稳固溶体的形成是由于溅射出的原子动能足以克服Cu、W固溶所需的混合热.以及溅射过程中粒子的纳米化和成膜过程中引入的大量缺陷造成的.
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