Structure and composition of Ba0.5Sr0.5TiO3 films deposited on (001) MgO substrates and the influence of sputtering pressure

Autor: Adrian Podpirka, L. M. B. Alldredge, Steven W. Kirchoefer, Wontae Chang, Mark E. Twigg, Jeffrey M. Pond

Publikováno v: Thin Solid Films. 548:178-185

The structure and composition of Ba0.5Sr0.5TiO3 thin films, sputter deposited on (001) MgO substrates, have been characterized by transmission electron microscopy. Deviations in film stoichiometry are seen to strongly correlate with the structural an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::18d4672cfea3056064290cd16c63d62d
https://doi.org/10.1016/j.tsf.2013.09.057

Magnetism and transport of CuCr2Se4 thin films

Autor: Mairbek Chshiev, Yayoi Takamura, L. M. B. Alldredge, Rajesh V. Chopdekar, Elke Arenholz, William H. Butler, Yves Idzerda, J. S. Bettinger, M. Liberati, Yuri Suzuki, J.R. Neulinger, Angelica M. Stacy

Publikováno v: Journal of Magnetism and Magnetic Materials. 318:65-73

We report on the successful synthesis, magnetism and transport of highly spin-polarized chalcogenide thin films of CuCr 2 Se 4 , which are promising candidates for spin-based electronic applications. We also present electronic structure calculations

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::091266930d0c258b7925d87863475550
https://doi.org/10.1016/j.jmmm.2007.04.024

Probing the role of the barrier layer in magnetic tunnel junction transport

Autor: Rajesh V. Chopdekar, Elke Arenholz, J. S. Bettinger, Brittany B. Nelson-Cheeseman, L. M. B. Alldredge, Yuri Suzuki

Publikováno v: Physical Review B-Condensed Matter and Materials Physics, vol 76, iss 22
Nelson-Cheeseman, BB; Chopdekar, RV; Alldredge, LMB; Bettinger, JS; Arenholz, E; & Suzuki, Y. (2007). Probing the role of the barrier layer in magnetic tunnel junction transport. Physical Review B-Condensed Matter and Materials Physics, 76(22). doi: 10.1103/PhysRevB.76.220410. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/35b9k5xf
Physical Review B, vol 76, iss 22

Magnetic tunnel junctions with a ferrimagnetic barrier layer have been studied to understand the role of the barrier layer in the tunneling process - a factor that has been largely overlooked until recently. Epitaxial oxide junctions of highly spin p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b46c5587e9f2b33492446087734ae9e9
https://doi.org/10.1103/physrevb.76.220410

Epitaxial growth of (001)-oriented Ba0.5Sr0.5TiO3 thin films on a-plane sapphire with an MgO/ZnO bridge layer

Autor: Steven W. Kirchoefer, Hongrui Liu, Vitaliy Avrutin, Wontae Chang, Emmanuel Rowe, H. Y. Liu, L. M. B. Alldredge, Hadis Morkoç, Ümit Özgür, Jacob H. Leach, Jeffrey M. Pond, Bo Xiao

Publikováno v: Applied Physics Letters. 95:212901

High quality (001)-oriented Ba0.5Sr0.5TiO3 (BST) thin films have been grown on a-plane sapphire (112¯0) by rf magnetron sputtering using a double bridge layer consisting of (0001)-oriented ZnO (50 nm) and (001)-oriented MgO (10 nm) prepared by plasm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ab0cd0bbca70ee62fb849911680502d4
https://doi.org/10.1063/1.3266862

Phase transitions and the temperature dependence of the dielectric properties in tetragonally strained barium strontium titanate films

Autor: Jeffrey M. Pond, Steven W. Kirchoefer, L. M. B. Alldredge, Wontae Chang

Publikováno v: Applied Physics Letters. 94:052904

The dielectric properties of sputter-deposited Ba1−xSrxTiO3 (BST) thin films on (001) MgO substrates with in-plane or out-of-plane tetragonal lattice structure distortions were characterized as a function of temperature. A temperature-dependent int

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::07a164608fe665e961d16f1a8dec0f66
https://doi.org/10.1063/1.3079093