Dr. Ziemer's research involves engineering surfaces in order to integrate wide bandgap semiconductors with functional and multi-functional oxides, organic molecules, and/or biomaterials. Dr. Ziemer's group, in the Interface Engineering Laboratory, takes advantage of the ultra-high vacuum environment to study, at the atomic level, the growth and processing of thin films and nanostructures. This "surface engineering" is based on the hypothesis that understanding the atomic-level interactions at a surface will lead to developing processes to create new materials and to effectively interface different materials for new functionalities. The tools used for growth and formation mechanism studies are solid source effusion cells, plasma sources, ion sources, atom sources, and the in-situ analysis tools of reflection high-energy electron diffraction (RHEED), Auger electron spectroscopy (AES), and x-ray photoelectron spectroscopy (XPS).
Articles
Electrical tuning of magnetism in Fe₃O₄/PZN–PT multiferroic heterostructures derived by reactive magnetron sputtering (with Ming Liu, Ogheneyunume Obi, Zhuhua Cai, Jing Lou, Guomin Yang, and Nian X. Sun), Chemical Engineering Faculty Publications (2010)
Strong magnetoelectric (ME) coupling was demonstrated in Fe₃O₄/PZN–PT (lead zinc niobate–lead titanate) multiferroic heterostructures obtained...
Spin-spray deposited multiferroic composite Ni₀.₂₃Fe₂.₇₇O₄/Pb(Zr,Ti)O₃ with strong interface adhesion (with Ming Liu, Ogheneyunume Obi, Jing Lou, Stephen Stoute, Jian Y. Huang, Zhuhua Cai, and Nian X. Sun), Chemical Engineering Faculty Publications (2008)
Ni₀.₂₃Fe₂.₇₇O₄ (NFO)/Pb(Zr,Ti)O₃ (PZT) multiferroic composites were synthesized by spin-spray deposition of NFO film onto PZT...
Correlation between texture, anisotropy, and vector magnetization processes investigated by two-dimensional vector vibrating sample magnetometry in BaO(Fe₂O₃)₆ thin film (with P. R. Ohodnicki, K. Y. Goh, M. E. McHenry, Z. Chen, C. Vittoria, and V. G. Harris), Chemical Engineering Faculty Publications (2008)
High ferromagnetic resonance frequencies and low linewidths in BaO(Fe₂O₃)₆ thin films are achieved by obtaining...
The effects of room temperature aging upon the magnetic properties of Ba-hexaferrite films grown on 6H-SiC substrates (with Z. Chen, Zhuhua Cai, Aria Yang, Carmine Vittoria, and V. G. Harris), Chemical Engineering Faculty Publications (2008)
The successes of making acceptable magnetic properties BaM films by different techniques based on pulsed...
Epitaxial growth of M-type Ba-hexaferrite films on MgO (111) || SiC (0001) with low ferromagnetic resonance linewidths (with Zhaohui Chen, Aria Yang, Antone Gieler, V. G. Harris, C. Vittoria, P. R. Ohodnicki, K. Y. Goh, M. E. McHenry, Zhuhua Cai, and Trevor L. Goodrich), Chemical Engineering Faculty Publications (2007)
Barium hexaferrite (BaM) films were deposited on 10 nm MgO (111) films on 6H silicon...