Publications

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2000
Nagarajan, V., S.P. Alpay, C.S. Ganpule, B.K. Nagaraj, S. Aggarwal, E.D. Williams, A.L. Roytburd, and Ramamoorthy Ramesh. "Role of substrate on the dielectric and piezoelectric behavior of epitaxial lead magnesium niobate-lead titanate relaxor thin films." Applied Physics Letters 77 (2000) 438-440.
Aggarwal, S., A.P. Monga, S.R. Perusse, Ramamoorthy Ramesh, V. Ballarotto, E.D. Williams, B.R. Chalamala, Y. Wei, and R.H. Reuss. "Spontaneous ordering of oxide nanostructures." Science 287 (2000) 2235-2237.
Chalamala, B.R., Y. Wei, R.H. Reuss, S. Aggarwal, S.R. Perusse, B.E. Gnade, and Ramamoorthy Ramesh. "Stability and chemical composition of thermally grown iridium-oxide thin films." Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures 18 (2000) 1919-1922.
Canedy, C.L., S. Aggarwal, H. Li, T. Venkatesan, Ramamoorthy Ramesh, F.W. Van Keuls, R.R. Romanofsky, and F.A. Miranda. "Structural and dielectric properties of epitaxial Ba1-xSrxTiO3/Bi4Ti3O 12/ZrO2 heterostructures grown on silicon." Applied Physics Letters 77 (2000) 1523-1525.
Fhessnegg, T., S. Aggarwal, B. Nielsen, Ramamoorthy Ramesh, D.J. Keeble, and E.H. Poindcxtor. "A study of vacancy-related defects in (pb,la)(zr,ti)o3 thin films using positron annihilation." IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control 47 (2000) 916-920.
Friessnegg, T., S. Aggarwal, Ramamoorthy Ramesh, B. Nielsen, E.H. Poindexter, and D.J. Keeble. "Vacancy formation in (Pb,La)(Zr,Ti)O3 capacitors with oxygen deficiency and the effect on voltage offset." Applied Physics Letters 77 (2000) 127-129.
1999
Nagaraj, B., T. Sawhney, S. Perusse, S. Aggarwal, Ramamoorthy Ramesh, V.S. Kaushik, S. Zafar, R.E. Jones, J.-H. Lee, V. Balu, and J. Lee. "(Ba,Sr)TiO3 thin films with conducting perovskite electrodes for dynamic random access memory applications." Applied Physics Letters 74 (1999) 3194-3196.
Aggarwal, S., S. Madhukar, B. Nagaraj, I.G. Jenkins, Ramamoorthy Ramesh, L. Boyer, and J .T., Jr. "Can lead nonstoichiometry influence ferroelectric properties of Pb(Zr,Ti)O3 thin films?." Applied Physics Letters 75 (1999) 716-718.
Aggarwal, S., A.M. Dhote, H. Li, S. Ankem, and Ramamoorthy Ramesh. "Conducting barriers for vertical integration of ferroelectric capacitors on Si." Applied Physics Letters 74 (1999) 230-232.
Aggarwal, S., I.G. Jenkins, B. Nagaraj, C. Canedy, Ramamoorthy Ramesh, G. Velasquez, L. Boyer, and J .T., Jr. "Conducting diffusion barriers for integration of ferroelectric capacitors on Si." Integrated Ferroelectrics 25 (1999) 205-221.
Subramanyam, G., F.W. Van Keuls, F.A. Miranda, C.L. Canedy, S. Aggarwal, T. Venkatesan, and Ramamoorthy Ramesh. "Correlation of electric field and critical design parameters for ferroelectric tunable microwave filters." Integrated Ferroelectrics. Vol. 24. Gordon & Breach Science Publ Inc, Newark, 1999. 273-285.
Friessnegg, T., B. Nielsen, V.J. Ghosh, A.R. Moodenbaugh, S. Madhukar, S. Aggarwal, D.J. Keeble, E.H. Poindexter, P. Mascher, and Ramamoorthy Ramesh. "Defect identification in (La, Sr)CoO3-δ using positron annihilation spectroscopy." Materials Research Society Symposium - Proceedings. Vol. 541. 1999. 161-165.
Chalamala, B.R., Y. Wei, R.H. Reuss, S. Aggarwal, B.E. Gnade, Ramamoorthy Ramesh, J.M. Bernhard, E.D. Sosa, and D.E. Golden. "Effect of growth conditions on surface morphology and photoelectric work function characteristics of iridium oxide thin films." Applied Physics Letters 74 (1999) 1394-1396.
.T., Jr., J, L.L. Boyer, G. Velasquez, Ramamoorthy Ramesh, S. Aggarwal, and V. Keramidas. "Effect of hydrogen anneals on niobium-doped lead zirconate titanate capacitors with lanthanum strontium cobalt oxide/platinum electrodes." Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers 38 (1999) 5361-5363.
Nagarajan, V., C.S. Ganpule, B. Nagaraj, S. Aggarwal, S.P. Alpay, A.L. Roytburd, E.D. Williams, and Ramamoorthy Ramesh. "Effect of mechanical constraint on the dielectric and piezoelectric behavior of epitaxial Pb(Mg1/3Nb2/3)O3(90%)-PbTiO3(10%) relaxor thin films." Applied Physics Letters 75 (1999) 4183-4185.
Alpay, S.P., V. Nagarajan, L.A. Bendersky, M.D. Vaudin, S. Aggarwal, Ramamoorthy Ramesh, and A.L. Roytburd. "Effect of the electrode layer on the polydomain structure of epitaxial PbZr0.2Ti0.8O3 thin films." Journal of Applied Physics 85 (1999) 3271-3277.
Van Keuls, F.W., R.R. Romanofsky, N.D. Varaljay, F.A. Miranda, C.L. Canedy, S. Aggarwal, T. Venkatesan, and Ramamoorthy Ramesh. "A Ku-band gold/BaxSr1-xTiO3/LaAlO3 conductor/thin-film ferroelectric microstrip line phase shifter for room-temperature communications applications." Microwave and Optical Technology Letters 20 (1999) 53-56.
Nagaraj, B., S. Aggarwal, T.K. Song, T. Sawhney, and Ramamoorthy Ramesh. "Leakage current mechanisms in lead-based thin-film ferroelectric capacitors." Physical Review B - Condensed Matter and Materials Physics 59 (1999) 16022-16027.
Aggarwal, S., S.R. Perusse, B. Nagaraj, and Ramamoorthy Ramesh. "Oxide electrodes as barriers to hydrogen damage of Pb(Zr,Ti)O3-based ferroelectric capacitors." Applied Physics Letters 74 (1999) 3023-3025.
Madhukar, S., S. Aggarwal, A.M. Dhote, Ramamoorthy Ramesh, S.B. Samavedam, S. Choopun, and R.P. Sharma. "Pulsed laser-ablation deposition of thin films of molybdenum suicide and its properties as a conducting barrier for ferroelectric random-access memory technology." Journal of Materials Research 14 (1999) 940-947.
Van Keuls, F.W., C.H. Mueller, F.A. Miranda, R.R. Romanofsky, C.L. Canedy, S. Aggarwal, T. Venkatesan, Ramamoorthy Ramesh, J.S. Horwitz, W. L Chang, and W.J. Kim. "Room temperature thin film BaxSr1-xTiO3 Ku-band coupled microstrip phase shifters: effects of film thickness, doping, annealing and substrate choice." IEEE MTT-S International Microwave Symposium Digest. Vol. 2. IEEE, Piscataway, NJ, United States, 1999. 737-740.
Ganpule, C.S., A. Stanishevsky, S. Aggarwal, J. Melngailis, E. Williams, Ramamoorthy Ramesh, V. Joshi, and Paz De Araujo. "Scaling of ferroelectric and piezoelectric properties in Pt/SrBi2Ta2O9/Pt thin films." Applied Physics Letters 75 (1999) 3874-3876.
Ganpule, C.S., A. Stanishevsky, Q. Su, S. Aggarwal, J. Melngailis, E. Williams, and Ramamoorthy Ramesh. "Scaling of ferroelectric properties in thin films." Applied Physics Letters 75 (1999) 409-411.
Alpay, S.P., V. Nagarajan, L.A. Bendersky, M.D. Vaudin, S. Aggarwal, Ramamoorthy Ramesh, and A.L. Roytburd. "The stress state and domain structure of epitaxial PbZr0.2Ti0.8O3 films on (001) SrTiO3 with and without la0.5r0.5CoO3 electrode layer." Materials Research Society Symposium - Proceedings. Vol. 541. 1999. 357-362.
Auciello, O., A.R. Krauss, I.M. Jaemo, A. Dhote, D.M. Gruen, S. Aggarwal, Ramamoorthy Ramesh, E.A. Irene, Y. Gao, and A.H. Mueller. "Studies of ferroelectric heterostructure thin films, interfaces, and device-related processes via in situ analytical techniques." Integrated Ferroelectrics. Vol. 27. Gordon & Breach Science Publ Inc, Newark, 1999. 103-118.

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