We report the demonstration of ferroelectric switching in yttrium (Y)-doped nitride semiconductors. In this study, single-crystalline, wurtzite Y0.07Al0.93N films were epitaxially grown on GaN/sapphire templates by plasma-assisted molecular beam epitaxy. The ferroelectric switching process has been investigated by current density–electric field (J-E) and polarization–electric field (P-E) loops as well as positive-up-negative-down measurements, showing a coercive field of ∼6 MV/cm and a switchable polarization of ∼130 μC/cm2. Ferroelectric switching was further confirmed via butterfly shape capacitance–voltage (C-V) loops and polarity-sensitive wet etching. The realization of ferroelectric, Y-doped AlN films further extends the family of nitride ferroelectrics and unravels a wealth of intriguing opportunities in III-nitride based electronic, piezo-electronic, and optoelectronic devices.

More from our Archive

• DOI: 10.1063/5.0157357 2023

  On-chip topological THz biosensors

  Nikhil Navaratna, Yi Ji Tan, Abhishek Kumar, Manoj Gupta, Ranjan Singh

• DOI: 10.1063/5.0161521 2023

  Solar-blind UV communication based on sensitive <b> <i>β</i> </b>-Ga2O3 photoconductive detector array

  Gaohui Shen, Zeng Liu, Chee-Keong Tan, Mingming Jiang, Shan Li, Yufeng Guo, Weihua Tang

• DOI: 10.1063/5.0162500 2023

  Pushing the performance limits of long wavelength interband cascade lasers using innovative quantum well active regions

  Yixuan Shen, J. A. Massengale, Rui Q. Yang, S. D. Hawkins, A. J. Muhowski

• DOI: 10.22331/q-2023-07-27-1070 2023

  Bell-type inequalities for systems of relativistic vector bosons

  Alan J. Barr, Paweł Caban, Jakub Rembieliński

• DOI: 10.1063/5.0159562 2023

  Ferroelectric YAlN grown by molecular beam epitaxy

  Ding Wang, Shubham Mondal, Jiangnan Liu, Mingtao Hu, Ping Wang, Samuel Yang, Danhao Wang, Yixin Xiao, Yuanpeng Wu, Tao Ma, Zetian Mi

• DOI: 10.3390/sym15081534 2023

  Deep Learning Approach to Source Localization of Electromagnetic Waves in the Presence of Various Sources and Noise

  Oluwole John Famoriji, Thokozani Shongwe

• DOI: 10.22331/q-2023-08-01-1071 2023

  20-Mode Universal Quantum Photonic Processor

  Caterina Taballione, Malaquias Correa Anguita, Michiel de Goede, Pim Venderbosch, Ben Kassenberg, Henk Snijders, Narasimhan Kannan, Ward L. Vleeshouwers, Devin Smith, Jörn P. Epping, Reinier van der Meer, Pepijn W. H. Pinkse, Hans van den Vlekkert, Jelmer J. Renema

• DOI: 10.1063/5.0159131 2023

  Mid-infrared swept cavity-enhanced photoacoustic spectroscopy using a quartz tuning fork

  Qinxue Nie, Zhen Wang, Simone Borri, Paolo De Natale, Wei Ren

• DOI: 10.1063/5.0161658 2023

  Nitrogen/phosphorus co-doped carbon decorated with metallic zinc for high-performance potassium-ion batteries

  Xiaodong Shi, Zhenming Xu, Yan Tang, Yunxiang Zhao, Bingan Lu, Jiang Zhou

• DOI: 10.1063/5.0159199 2023

  Photothermal materials with energy-storage properties provide an energy-saving design for highly efficient anti-icing/deicing applications

  Zhenting Xie, Wei Feng, Hong Wang, Rong Chen, Xun Zhu, Yudong Ding, Qiang Liao