Changhao Zhao

Multi-dimensional defect regulation mechanism of MgO-modified aluminum nitride ceramic substrates for performance control

P.X. Ye, Changhao Zhao, Linda Qi, Haoyan Zhang et autres

cn (code pays fourni par la source)

Leakage-free evaluation and distribution-robust spatio-temporal graph learning for inductive kriging

Chen Yang, Changhao Zhao, Haoyang Zhao, Youquan He et autres

cn (code pays fourni par la source)

Impacts of defects on the electrical conductivity of potassium sodium niobate from first-principles Kubo-Greenwood formalism

Zimin Feng, Fangzhou Yao, Binjie Chen, Mao‐Hua Zhang et autres

Effect of yttrium oxide-calcium oxide composite sintering aid system on the mechanical and thermal properties of aluminum nitride ceramic substrates

Haoyan Zhang, Changhao Zhao, P.X. Ye, Zhenpeng Cai et autres

Abstract High-voltage and high-power semiconductor devices impose higher requirements on the heat dissipation capacity and mechanical reliability of packaging substrates. Aluminum nitride (AlN) ceramics are regarded as ideal substrate materials due to their excellent thermal properties; however, their actual thermal conductivity is …

cn (code pays fourni par la source)

Ultralow-loss and temperature-stable microwave ceramics for C-band dielectric resonator antennas

Xin Wang (91924), Kaiheng Zhang, Zhaochen Xi, Hiroko Yokota et autres

cn, jp, my (code pays fourni par la source)

Piezoelectric hardening by redox reaction treatment in BaTiO3-based piezoceramics

Linda Qi, Changhao Zhao, Tianhao Liu, P.X. Ye et autres

cn (code pays fourni par la source)

Temperature-dependent field-induced phase transition behavior in Pb(Yb1/2Nb1/2)O3-based antiferroelectrics

Qing Li, Wei Ping Deng, Tian-Ci Ma, Changhao Zhao et autres

Complex lead-based perovskites with the general formula Pb(B x 'B 1- x ")O 3 , represent an important class of antiferroelectrics beyond the prototypical PbZrO 3 and NaNbO 3 . Depending on the combination of B-site species and the degree of cationic …

cn, ch (code pays fourni par la source)

⁷Li NMR short-range ordering in hardened lithium sodium niobate

Millena Logrado, Anuraag Gaddam, Fangping Zhuo, Changhao Zhao et autres

Abstract Thermal treatments play a crucial role in tuning the functional properties of lithium-based perovskites, which are of interest for applications in energy storage, actuation and sensing. In the present work, the impact of aging and quenching on the local structure and …

de, pl, md, pt, cn (code pays fourni par la source)

Polarization rotation in high-performance KNN-based piezoceramics revealed by an in situ electric field pair distribution function

Yingying Yu, Fan‐Yi Meng, Cheng Yang, Qi Long Liang et autres

Understanding the atomic-scale structural dynamics that enable ultrahigh piezoelectric responses in lead-free piezoceramics remains a central challenge in materials science. Here, we employ in situ electric field pair distribution function (PDF) analysis to elucidate the local structural origin of a KNN-based piezoceramic …

cn (code pays fourni par la source)

Structural relaxation of ferroelectric phase in hard sodium lithium niobate solid solutions studied by solid-state NMR

Millena Logrado, Changhao Zhao, Hergen Breitzke, Jürgen Rödel et autres

Abstract Hard sodium lithium niobate (LNN) solid solutions offer a promising environmentally benign alternative to lead-based ferroelectric materials for electronic devices. A major challenge in their practical application is that their ferroelectric phase relaxes over a timescale ranging from weeks to years …

de, cn (code pays fourni par la source)

Precipitation Hardening of La Doped $\text{BaTiO}_{3}$ Piezoelectric Ceramics based on Redox Reaction

Qi Long Liang, Changhao Zhao, P.X. Ye, Shengtao Li

In resonant applications, mechanical loss is one of the key factors affecting the performance of devices. Excessive mechanical loss can significantly degrade the piezoelectric effect. Therefore, piezoelectric hardening is commonly employed to reduce mechanical loss, ensuring stable operation of the devices under …

cn (code pays fourni par la source)

Structural relaxation of ferroelectric phase in hard sodium lithium niobate solid solutions studied by Solid-State NMR

Millena Logrado, Changhao Zhao, Hergen Breitzke, Jürgen Rödel et autres

de, cn (code pays fourni par la source)