Scientist Profile

Photo

Roland Villano Sarmago

Physicist, Outstanding Young Scientist (1996)

Expertise: Physics, High Tc (high temperature) Superconductors and Devices, Nano materials, Magnetic Materials, Electronic materials, Transparent electrodes, Manipulation of ZnO (zinc oxide) nano particles, Bismuth cuprate superconductor films, Magnetic Susceptibility of High Tc (high temperature) Superconductors

Dr. Roland V. Sarmago is recognized for his pioneering study on bulk superconductors and superconducting thin films using liquid phase epitaxi (LPE) and radio frequency magnetron sputtering.

Affiliation

Asst. Professor IV, National Institute of Physics, University of the Philippines, Diliman, Quezon City

Association

    • National Research Council of the Philippines, Regular Member
    • Samahang Pisika ng Pilipinas, Member
    • Materials Physics Group, Member
    • Elementary Physics Laboratory, Member

Employment

    • National Institute of Physics, University of the Philippines, Instructor I, 1983-1988
    • National Institute of Physics, University of the Philippines, Instructor III, 1988-1990
    • National Institute of Physics, University of the Philippines, Instructor V, 1990-1993
    • National Institute of Physics, University of the Philippines, Assistant Professor III, 1993

Award

    • Outstanding Young Scientist Award (Physics), National Academy of Science and Technology, 1996
    • PCASTRD Fellowship, Phil. Council for Advanced Science Technology Research and Development (PCASTRD), 1989
    • NSDB Scholarship, National Science Development Board (NSDB), 1979

Research

    • Preparation and characterization of bulk superconductors [Completed]
    • Comparative study on the substitution effects of rare earth ions on the electronic states and superconducting properties of Bi-2212 superconductors [Completed]
    • A proposed mechanism for the reaction of Bi 2201 with CaCOs and CuO to produce Bi 2212 [Completed]
    • A sutdy on the synthesis of Bi2 Sr2Ca2Cu3O10 from BiSr2CaCu2O8, CaCO3, and CuO [Completed]
    • Investigation of Nd+3 substitution in BiSr2CaCu2O8+y form Bi2Sr2ca1-xNdXCu2O8+y superconductors [Completed]
    • DTA/TG of Bi 2212 precursor mixtures [Completed]
    • Behavior of rage earth incorporation in Bi 2212 LBE films [Completed]
    • Variations in the combustion method and stoichiometric composition in lead-doped BSCCO ceramic super-conductors [Completed]
    • Investigation on the synthesis of Y-doped Bi 2212 [Completed]

Papers Presented

    • Preparation and Characterization of Y-Ba-Cu-O Superconductors with Varying Stoichiometries, 2nd Asean Science and Technology Week
    • Synthesis of High Tc Superconductors, 7th National Physics Congress, Samahang Pisika ng Pilipinas
    • Report on the Liquid Phase Epitaxy System of the Materials Physics Laboratory of the NIP, De La Salle University, Manila
    • Determination of the Growth temperature of Bismuth 2212 LPE FIlms, De La Salle University, Manila
    • Effects of Melting Temperature on the Growth of Bismuth 2212 LPE Films, De La Salle University, Manila
    • Effects of Time on the Growth of Bi 2212 LPe Films, De La Salle Univ., Manila
    • Growth of Bismuth 2201 LPE Films by Dipping Without Substrate Rotation, De La Salle University, Manila
    • Phase Diagram of Bi-Sr-Ca-Cu-O (2212)-KCI System, De La Salle University, Manila
    • Investigations on the Substitution of Y in Bismuth Cuprates (2212), De La Salle Univ., Manila
    • Magnetic Susceptibility Measurements of Bi2Sr2Ca1-xYxCu2O8+y, De La Salle Univ., Manila
    • Magnetic Susceptibility Measurements of Bi2Sr2Ca1-xNdxCu2O8+y, De La Salle University, Manila
    • RF-Sputtered Films from Various Target Compositions, De La Salle University, Manila
    • Analysis of RF-Sputtered Films from BSCCO (2212) Target, De La Salle University, Manila
    • Preparation of Bulk Bi 2212 Superconductors by Arc Discharge Melting, De La Salle University, Manila
    • 2223 Phase Growth in Pb-Subsituted Bi-Sr-Ca-Cu-O Ceramic Superconductors Prepared via the Combustion Method, De La Salle University, Manila
    • Determination of the Optimum Sintering Temperature for the Pb-Doped Bi 2223 Phase Superconductors Prepared by the Combustion Method, De La Salle University, Manila
    • A Proposed Mechanism for the Reaction of Bi 2201 with CaCO3 and CuO to Produce Bi 2212, Bolinao, Pangasinan
    • DTA/TG of Bi2212 Precursor Mixtures, Bolinao, Pangasinan
    • Behavior of Rare Earth Incorporation Bi 2212 LPE Films, Bolinao, Pangasinan
    • Variations in the Combustion Method and Stoichiometric Composition in Lead-doped BSCCO Ceramic Superconductors, Bolinao, Pangasinan
    • Investigation on the Synthesis of Y-doped Bi 2212, Bolinao, Pangasinan
    • Gd subsititution in Ca Sites in Bi 2212, 1992 Autunm Meeting of the Japan Physical Society, Tokyo, Japan
    • Nd Subsititution for Ca in Bi 2212 superconductors via LPE, 1992 Spring Meeting of the Japan Physical Society, Tokyo, Japan
    • Pb Substitution for Ca in Bi 2212 Superconductors, Waseda International Symposium on Superconductivity, Tokyo, Japan
    • Nd Substituted Bi 2212 Films via LPE, 1992 Bejing High Tc Superconductor Symposium
    • Investigation on the Incorporation of Pb in Ca Sites in Bi 2212 Superconductors, Autunm Meeting of the Japan Physical Society, Hokkaido, Japan
    • Fermation of Bi 2212 Superconductors, Baguio City
    • Demonstration of SQUID Behavior in YBCO Bulk Superconductors, Baguio City
    • Synthesis of Nd-Ca-Cu-O Superconductors, Bauio City
    • Determination of Oxygen Content in YBCO Superconductors, Baguio City
    • Structure and Oxygen Stoichoimetry in Y-Ba-Cu-O High Tc Superconductors, Quezon City
    • Structure of High Tc Superconductors, Quezon City

Education

    • University of the Philippines (UP) Diliman, Quezon City, B.S. Physics, 1983
    • UP Diliman, Quezon City, M.S. Physics, 1989
    • UP Diliman, Quezon City, Ph.D. in Physics, 1993

Publication

    • Sarmago, H. Enomoto, H. Ozaki, (1993) Effect of Pb substitution for Ca in Bi2Sr2CaCu2O
    • Phase Transitions Volume 41
    • Develos, K.D. Villaflor, A.B. Sarmago, R.V., (1995) Effect of post combustion denitration treatment in Pb-Bi-Sr-Ca-Cu-O ceramic superconductors
    • Japan Journal of Applied Physics Volume 1, No. 34
    • Rillera, H.P., Sioson, R.D., Sarmago, R.V., (2004) Growth of Y-Doped Bi-2212 single crystals
    • Transactions of the National Academy of Science and Technology Volume 26, No. 1
    • Sarmiento, R., Manuel, A.H., Sarmago, R.V., (2004) Highly textured Bi2Sr2CaCu2O8+d film synthesis unto silver substrates by electrophoretic deposition
    • Transactions of the National Academy of Science and Technology Volume 26, No. 1
    • Pigaroa, S. Ramos, D. Jr. Sarmago, R.V., (2004) Low field AC susceptibility behavior of Pb-doped Bi-2223
    • Transactions of the National Academy of Science and Technology Volume 26, No. 1
    • Afalla, J.P.C., Sibayan-Torralba, M.V., Sarmago, R.V., (2004) Superposition of intergranular and intragranular losses to the AC harmonic susceptibilities of bulk YBCO
    • Transactions of the National Academy of Science and Technology Volume 26, No. 1

Trainings

    • Nuclear Methods in Materials Development, 1993 S 3-30, Beijing, China
    • Meetings of the Japan Physical Society, 1991-1993, Japan
    • Waseda International Symposium on Superconductivity, 1992 O, Japan
    • High Tc Superconductivity, 1989 Mr 29-Ap 15, ICTP, Trieste, Italy
    • IUC Congress on the Application of Synchroton Radiation in Crystallography, Beijing, China