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In this work, the ferroelectric characteristic of a 5 nm Hf0.5Zr0.5O2 (HZO) metal-ferroelectric-insulator-semiconductor (MFIS) device is enhanced through strained complementary metal oxide semiconductor (CMOS)-compatible TiN electrode engineering. Strained TiN top-layer electrodes with different nitrogen (N) concentrations are deposited by adjusting the sputtering process conditions. The TiN electrode with 18% N exhibits a compressive characteristic, which induces tensile stress in a 5 nm HZO film. A device with 18% N in TiN shows a higher remanent polarization (2Pr) and larger capacitance value than the compared sample, indicating that the strained TiN is promising for enhancing the ferroelectricity of sub-5 nm HZO devices.

In this study, we comprehensively investigate the constant voltage stress (CVS) time-dependent breakdown and cycle-to-breakdown while considering metal-ferroelectric-metal (MFM) memory, which has distinct domain sizes induced by different doping species, i.e., Yttrium (Y) (Sample A) and Silicon (Si) (Sample B). Firstly, Y-doped and Si-doped HfO2 MFM devices exhibit domain sizes of 5.64 nm and 12.47 nm, respectively. Secondly, Si-doped HfO2 MFM devices (Sample B) have better CVS time-dependent breakdown and cycle-to-breakdown stability than Y-doped HfO2 MFM devices (Sample A). Therefore, a larger domain size showing higher extrapolated voltage under CVS time-dependent breakdown and cycle-to-breakdown evaluations was observed, indicating that the domain size crucially impacts the stability of MFM memory. [ABSTRACT FROM AUTHOR]

Although the food regime concept has become an important approach for addressing the global food trade, most of its applications have utilized qualitative methods. This article applies a quantitative social network analysis (SNA) and a more-than-qualitative relational approach, drawing from the geography literature to explore regional food regimes in Asia in the World Trade Organization (WTO) era. Employing data from the Food and Agriculture Organization Corporate Statistical Database (FAOSTAT) and the Design of Trade Agreements (DESTA) project database, this paper's analysis of the governance of Asian regional vegetable trade networks reveals the multiplicity inherent in food regimes under the WTO. In this context, the topologies of food regimes—including degree centrality, betweenness centrality, and closeness centrality—reveal the emergence of a multi-polar food system in Asia. [ABSTRACT FROM AUTHOR]