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Full-Text Articles in Engineering
Irradiation-Induced Amorphous-To-Crystalline Phase Transformations In Ceramic Materials, Cyrus Koroni, Tristan Olsen, Janelle P. Wharry, Hui Xiong
Irradiation-Induced Amorphous-To-Crystalline Phase Transformations In Ceramic Materials, Cyrus Koroni, Tristan Olsen, Janelle P. Wharry, Hui Xiong
Materials Science and Engineering Faculty Publications and Presentations
Amorphous ceramics are a unique class of materials with unusual properties and functionalities. While these materials are known to crystallize when subjected to thermal annealing, they have sometimes been observed to crystallize athermally when exposed to extreme irradiation environments. Because irradiation is almost universally understood to introduce disorder into materials, these observations of irradiation-induced ordering or crystallization are unusual and may partially explain the limited research into this phenomenon. However, the archival literature presents a growing body of evidence of these irradiation-induced amorphous-to-crystalline (a-to-c) phase transformations in ceramics. In this perspective, the summary and review of examples from the literature …
Special Topic On Materials And Devices For 5g Electronics, Nathan D. Orloff, Rick Ubic, Michael Lanagan
Special Topic On Materials And Devices For 5g Electronics, Nathan D. Orloff, Rick Ubic, Michael Lanagan
Materials Science and Engineering Faculty Publications and Presentations
Next generation communications are inspiring entirely new applications in education, healthcare, and transportation. These applications are only possible because of improvements in latency, data rates, and connectivity in the latest generation. Behind these improvements are new materials and devices that operate at much higher frequencies than ever before, a trend that is likely to continue.
Unification Of The Negative Electrocaloric Effect In Bi1/2Na1/2Tio3-Batio3 Solid Solutions By Ba1/2Sr1/2Tio3 Doping, Sarir Uddin, Guang-Ping Zheng, Yaseen Iqbal, Rick Ubic, Junhe Yang
Unification Of The Negative Electrocaloric Effect In Bi1/2Na1/2Tio3-Batio3 Solid Solutions By Ba1/2Sr1/2Tio3 Doping, Sarir Uddin, Guang-Ping Zheng, Yaseen Iqbal, Rick Ubic, Junhe Yang
Materials Science and Engineering Faculty Publications and Presentations
The microscopic mechanisms of the negative electrocaloric effect (ECE) of the single-phase (1−x)(0.94Bi1/2Na1/2TiO3-0.06BaTiO3)-xBa1/2Sr1/2TiO3 (BNT-BT-BST) perovskite solid solutions fabricated via the sol-gel technique are explored in this study. Dielectric and mechanical relaxation analyses are employed to investigate the ferroelectric and structural transitions of the samples. The electrocaloric properties of the samples were measured by thermodynamics Maxwell relations. The difference between the depolarization temperature (Td) and the maximum dielectric constant temperature (Tm) was found to decrease with increasing BST content. Doping with BST stabilized the …