AUTHOR=Han Haneul , Lee Chaerin , Kim Youjung , Lee Jinhyun , Yoon Sanghwa , Yoo Bongyoung 

TITLE=The self-annealing phenomenon of electrodeposited nano-twin copper with high defect density

JOURNAL=Frontiers in Chemistry

VOLUME=10

YEAR=2022

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2022.1056596

DOI=10.3389/fchem.2022.1056596

ISSN=2296-2646

ABSTRACT=<p>Electroplated copper was prepared under typical conditions and a high defect density to study the effect of the defects on its self-annealing phenomenon. Two conditions, grain growth and stress relaxation during self-annealing, were analyzed with electron backscattered diffraction and a high-resolution X-ray diffractometer. Abnormal grain growth was observed in both conditions; however, the grown crystal orientation differed. The direction and relative rate at which abnormal grain growth proceeds were specified through textured orientation, and the self-annealing mechanism was studied by observing the residual stress changes over time in the films using the sin<sup>2</sup>Ψ method.</p>