Research Summary
Randall’s research interests are in the area of discovery and compositional design of functional materials for electrical energy transduction and storage, defect chemistry and crystal chemistry and their impact on phase transition behavior, electromechanical devices based upon electrostriction and piezoelectrics, supercapacitors, thermoelectrics, and microwave materials. He has used a variety of different processing and characterization methods that have impacted manufacturing and development processes for materials, particularly in the capacitor and piezoelectric industry.
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Research Keywords
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Projects
Recent Publications
Thermal analysis of base metal electrode multilayer ceramic capacitors
Kang, K., Shoemaker, D. C., Yousefian, P., Cockburn, J., Ellmore, A., Lanagan, M. T., Randall, C. A., Trolier-McKinstry, S. & Choi, S., Oct 2025, In: Journal of the American Ceramic Society. 108, 10, e70020.Research output: Contribution to journal › Article › peer-review
Co-continuous composites from cold sintering
Lai, P. H., Lan, Y. C., Jacob, B. J., Fanghanel, J., Ghasemi, M., Facusse, O., Colby, R. H., Randall, C. A., Gomez, E. D. & Vogt, B., Oct 2025, In: Journal of the American Ceramic Society. 108, 10, e70003.Research output: Contribution to journal › Article › peer-review
Cold sintering of geopolymer powders
Lattanzi, L., Conte, A., Sin, A., Garcia, J. M., Randall, C. A. & Colombo, P., Apr 2025, In: Journal of the American Ceramic Society. 108, 4, e20331.Research output: Contribution to journal › Article › peer-review
Multiple creep mechanisms driving densification of composites undergoing cold sintering
Mena-Garcia, J., Momjian, S., Fan, Z., Ndayishimiye, A., Auker, W., Gray, J. & Randall, C. A., Oct 2025, In: Journal of the European Ceramic Society. 45, 13, 117440.Research output: Contribution to journal › Article › peer-review
A comparative consideration of the link between poling procedure, induced damage, and piezoelectric response in perovskite ferroelectrics
Mervosh, M. W., Jones, H., Argüelles, A. P., Trolier-McKinstry, S. & Randall, C. A., Jun 28 2025, In: Journal of Applied Physics. 137, 24, 244102.Research output: Contribution to journal › Article › peer-review
Non-equilibrium thermodynamics and kinetics of the sintering process: A relaxation model describing cold sintering
Momjian, S., Mauro, J. C. & Randall, C. A., Dec 2025, In: Journal of the American Ceramic Society. 108, 12, e70180.Research output: Contribution to journal › Article › peer-review
Cold sintering of hexagonal boron nitride micro flakes
Nishiyama, H., Mena-Garcia, J., Shimizu, H., Jones, A. H., Gaskins, J. T. & Randall, C. A., Sep 1 2025, In: Surfaces and Interfaces. 72, 106901.Research output: Contribution to journal › Article › peer-review
Demonstration of thick film processes for composite BaTiO3-based devices by a solvent-free polymer fibrillation method
Ribeiro, C., Nishiyama, H., Tkach, A., Costa, M. E., Vilarinho, P. M. & Randall, C., Oct 1 2025, In: Chemical Engineering Journal. 521, 166605.Research output: Contribution to journal › Article › peer-review
Nitrogen Vacancies Induce Fatigue in Ferroelectric Al0.93B0.07N
Smith, W. J., Akkopru-Akgun, B., Ozdemir, E., Dryzhakov, B., Hayden, J., Maria, J. P., Kelley, K. P., Randall, C. A., Trolier-McKinstry, S. & Beechem, T. E., Sep 30 2025, In: ACS nano. 19, 38, p. 34089-34096 8 p.Research output: Contribution to journal › Article › peer-review
Cold sintered semiconducting composites through integrating 2D MXene into the grain boundaries of Na2Mo2O7 dielectric ceramic
Xv, W., Li, X., Wang, H., Yang, J., Randall, C. A. & Guo, J., Jul 14 2025, In: Applied Physics Letters. 127, 2, 021903.Research output: Contribution to journal › Article › peer-review
Electrical degradation in dielectric and piezoelectric oxides: Review of defect chemistry and characterization methods
Yousefian, P., Akkopru-Akgun, B., Randall, C. A. & Trolier-McKinstry, S., Sep 2025, In: Progress in Materials Science. 153, 101473.Research output: Contribution to journal › Review article › peer-review
Impact of thermal crosstalk on dependent failure rates of multilayer ceramic capacitors undergoing lifetime testing
Yousefian, P., Shoemaker, D. C., Mena-Garcia, J., Norrell, M., Long, J., Choi, S. & Randall, C. A., Jan 21 2025, In: Journal of Applied Physics. 137, 3, 034104.Research output: Contribution to journal › Article › peer-review
Bimodal grain sized barium titanate dielectrics enabled under the cold sintering process
DeChiara, J. A., Momjian, S., Wang, K. & Randall, C. A., Sep 2024, In: Open Ceramics. 19, 100626.Research output: Contribution to journal › Article › peer-review
Cold sintering of nickel manganese oxide for thermistor fabrication
Fanghanel, J., Yokomizo, S., Funahashi, S. & Randall, C. A., Nov 14 2024, In: Journal of Materials Chemistry A. 12, 48, p. 33984-33990 7 p.Research output: Contribution to journal › Article › peer-review
Conductivity of cold sintered diphasic composites containing a ceramic active material and a solid-state electrolyte or carbon for all solid-state batteries
Grady, Z. M., Fan, Z., Fanghanel, J. & Randall, C. A., Jan 22 2024, In: Journal of Materials Chemistry A. 12, 8, p. 4492-4512 21 p.Research output: Contribution to journal › Article › peer-review