EMPART Research Group 12.2.1999

Infotech Oulu

Ahmed E, Hill AE, Pilkington RD, Tomlinson RD, Leppävuori S, Levoska J, Kusmartseva O, Ahmed W & Afzal A (1997) Deposition and characterization of copper indium gallium diselenide films by laser ablation and flash evaporation for use in solar cells. Journal of Materials Science, 32: 5611-5613.

Leppävuori S, Uusimäki A & Zhang H (1997) Structural characteristics of lead-zirconate-titanate piezoelectric films around morphotropic phase boundary. Ferroelectrics 195: 59-63.

Lozinski A, Wang F, Uusimäki A & Leppävuori S (1997) PLZT thick films for pyroelectric sensors. Mes. Sci. Technol.8: 33-37.

Moilanen H, Remes J & Leppävuori S (1997) Low resistivity LCVD direct write Cu conductor lines for IC customisation. Physica Scripta T69: 237-241.

Remes J, Moilanen H & Leppävuori S (1997) Laser-assisted chemical vapor deposition of nickel and laser cutting in integrated circuit restructing. Physica Scripta T69: 268-272.

Wang F & Leppävuori S (1997) Properties of epitaxial ferroelectric PbZr0.56Ti0.44O3 hetero-structures with La0.5Sr0.5CoO3 metallic oxide electrodes. Journal of Applied Physics 82 (3): 1293-1298.

Wang F, Uusimäki A & Leppävuori S (1997) Preparation of electrical properties of Ba0.6Sr0.4TiO3 thin films deposited by the sol-gel method. Physica Scripta T69: 332-335.

Karmanenko S, Wang F, Dedyk A I, Uusimäki A & Leppävuori S (1997) Influence of the interface parameters on dielectric characteristics of BSTO ferroelectric film planar capacitors. Proc. of 2nd European Meeting on Integrated Ferroelectrics, Jouy-en-Josas, France, 29 September - 1 October 1997.

Kemppinen E, Mikkonen P & Leppävuori S (1997) Performance of Cu and Ag based microstrips up to millimeter wave frequencies. Proc. of 11th European Microelectronics Conference, 14–16 May 1997, Venice, Italy: 100-108.

Lahti M, Dong Y & Leppävuori S (1997) Realisation of temperature sensors on low-temperature co-fired ceramic substrates. Proc. of 11th European Microelectronics Conference, 14 – 16 May 1997, Venice, Italy: 554-556.

Lahti M, Leppävuori S, Lantto V & Kukkola K (1997) Inductors on an LTCC substrates realised by the gravure offset printing technique. Proc. of 11th European Microelectronics Conference, 14 – 16 May 1997, Venice, Italy: 436-443.

Leppävuori S, Remes J & Moilanen H (1997) Integrated circuit repair and modification by laser-assisted chemical vapour deposition of Cu and Ni. Proc. of ELTE 97 Conference, 7-9 May 1997, Krynica, Puola: 378-382.

Lozinski A, Wang F, Leppävuori S & Uusimäki A (1997) Thick-film pyroelectric linear array. Proc. of the 11th European Conference on Solid-State Transducers (EUROSENSORS XI), 21-24 September 1997, Warsaw, Poland: 993-996.

Remes J, Moilanen H & Leppävuori S (1997) Fast first-run silicon repair cases by laser chemical vapor deposition of copper from Cu(HFAC)TMVS. Proc. of IPFA’97 Conference, 21-25 July 1997, Singapore: 280-283.

Sternberg A, Tyunina M, Kundzinsh M, Zauls V, Ozolinsh M, Kundzinsh K, Shorubalko I, Kosec M, Pardo L, Calzada ML, Alguero M, Kullmer R, Bäuerle D, Levoska J, Leppävuori S & Murtoniemi T (1997) Composition-structure-properties relationships in ferroelectric thin films. Proc. of COST 514 Workshop "Ferroelectric Thin Films", 14-15 April 1997, Parma, Italy: 95-102.

Leppävuori S (1997) Annual Report 1996, Microelectronics and Material Physics Laboratories, Report T96, Dept. of Electrical Engineering, University of Oulu.

Deleniv A, Galchenko S, Kholodniak D, Kondratiev V, Leppävuori S, Scischev A & Vendik I (1997) Modeling of HTS Planar Transmission Lines. PIERS 1997 Proceedings: 78.

Jakku E, Hagberg J, Rytivaara M & Leppävuori S (1997) The use of new stripline structures in the design of HTS microwave filters. The 4th International Student Seminar on High Temperature Superconductors at Microwave, May 19-25, 1997, Wuppertal, Germany.

Jakku E, Hagberg J, Rytivaara M & Leppävuori S (1997) The use of new stripline structures in the design of HTS microwave filters. URSI / IEEE / INFOTECH OULU / PRO ELECTRONICA XXII Convention on Radio Science, University of Oulu, 20-21 November 1997: 99-100.

Koivusaari J, Levoska J & Leppävuori S (1997) Laser ablation deposition of diamond-like carbon: relationships between laser intensity, velocity of carbon ions and bonding in the films. Proc. of the XXXI Annual Conference of the Finnish Physical Society, 13-15 March 1997, Helsinki, Finland.

Lahti M & Leppävuori S (1997) Realization of Planar Inductors on LTCC Substrate for Radio Frequencies. URSI / IEEE / INFOTECH OULU / PRO ELECTRONICA XXII Convention on Radio Science, University of Oulu, 20-21 November1997: 97-98.

Leppävuori S, Moilanen H & Remes J (1997) Fast IC repair cases by laser cutting and laser chemical vapor deposition. URSI / IEEE / INFOTECH OULU / PRO ELECTRONICA XXII Convention on Radio Science, University of Oulu, 20-21 November 1997: 153-154.

Levoska J, Tyunina M & Leppävuori S (1997) Laser ablation deposition of silicon nanostructures. Proc. of the XXXI Annual Conference of the Finnish Physical Society, 13-15 March 1997, Helsinki, Finland.

Rytivaara M, Hagberg J, Jakku E & Leppävuori S (1997) Inductive measurements on T_c and J_c of thin superconducting films. The 4th International Student Seminar on High Temperature Superconductors at Microwave, 19-25 May 1997, Wuppertal, Germany.

Wang F, Karmanenko S & Leppävuori S (1997) Dielectric characteristics of Ba_0.7Sr_0.3TiO₃ ferroelectric film realised by sol-gel method for planar capacitor. Proc. of the XXXI Annual Conference of the Finnish Physical Society, 13-15 March 1997, Helsinki, Finland.

Wang F, Karmanenko S & Leppävuori S (1997) Ferroelectric PZT heterostructures with LSCO metallic oxide electrodes fabricated by sol-gel method. Proc. of the XXXI Annual Conference of the Finnish Physical Society, 13-15 March 1997, Helsinki, Finland.

Wang F & Leppävuori S (1997) Ferroelectric (Ba, Sr)TiO3 thin films by sol-gel method for tunable devices. URSI /IEEE /INFOTECH OULU/PRO ELECTRONICA XXII Convention on Radio Science, University of Oulu, 20-21 November 1997: 95-96.

Dedyk AI, Karmanenko SF, Leppävuori S, Sakharov VI, Semenov AA, Serenkov IT, Ter-Martirosyan LT, Uusimäki A & Wang F (1998) Influence of layer interface parameters on dielectric characteristics of BSTO ferroelectric film planar capacitors. Journal de Physique IV, 8: Pr9-217-220.

Kemppinen E, Mikkonen P & Leppävuori S (1998) Performance of Cu and Ag based microstrips up to millimeter wave frequencies. Microelectronics International, 15/2, 1998: 11-15.

Kruusing A (1998) Magnetic microdevices and their fabrication methods. Doctoral Thesis, Tallinn Technical University (1998) 35 p. + App.

Leppävuori S & Uusimäki A (1998) Use of gravure offset printing in manufacturing of electronic applications. Electronic Packaging for High Reliability, Low Cost Electronics, NATO Asi Series. Partnership Sub-Series 3, High Technology, Vol. 57.

Lozinski A, Wang F, Leppävuori S & Uusimäki A (1998) Thick-film pyroelectric linear array. Sensors and Actuators: A Physical, 68/1-3, 1998: 290-293.

Nánai L, Vajtai R, Beleznay Cs, Remes J, Leppävuori S & George TF (1998) Structural changes in GaAs induced by ultrafast (fs) laser pulses. Journal of Materials Research, 13, 1998: 1808-1811.

Sternberg A, Tyunina M, Kundzinsh M, Zauls V, Ozolinsh M, Kundzinsh K, Shorubalko I, Kosec M, Calzada L, Pardo L, Alguero M, Kullmer R, Bäuerle D, Levoska J, Leppävuori S & Murtoniemi T (1998) Composition-structure-properties correlation in ferroelectric thin films. Journal of the Korean Physical Society, 32, 1998: S1365-S1368.

Tian D (1998) Microstructure, cleavage fracture and toughness of granular bainite in simulated coarse-grained heat-affected zones of low-carbon high-strength steels, Doctoral Thesis, University of Oulu, Acta Universitatis Ouluensis, Technica, C113: 120 p.

Tyunina M, Levoska J & Leppävuori S (1998) Experimental studies and modeling of Pb-Zr-Ti-O film growth in pulsed laser deposition. Journal of Applied Physics, 83, 1998: 5489-5496.

Tyunina M, Levoska J, Sternberg A & Leppävuori S (1998) Relaxor behavior of pulsed laser deposited ferroelectric (Pb_1-xLa_x)(Zr_0.65Ti_0.35)O₃ films. Journal of Applied Physics, 84, 1998: 6800-6810.

Tyunina M, Levoska J, Sternberg A, Zauls V, Kundzinsh M, Shorubalko I & Leppävuori S (1998) Pulsed laser deposition of relaxor ferroelectric films. Journal de Physique IV, 8: Pr-261-264.

Vendik IB, Gal'chenko SA, Gubina MN, Kondratiev VV, Leppävuori S & Jakku E (1998) Nonlinear characteristics of HTS resonators and filters. Technical Physics Letters, December 1998, Volume 24, Issue 12: 956-958.

Vendik IB, Kondratiev VV, Svishchev AA, Leppävuori S & Jakku E (1998) Band-pass microstripe filters using high-temperature superconducting films. Technical Physics Letters, December 1998, Volume 24, Issue 12: 968-969.

Wang F (1998) Characteristics of ABO₃-type perovskite films prepared with chemical solution deposition and screen printing technology, Doctoral Thesis, University of Oulu, Acta Universitatis Ouluensis, Technica, C116, 69 p + App.

Wang F, Uusimäki A, Leppävuori S, Karmanenko SF, Dedyk AI, Sakharov VI & Serenkov IT (1998) Ba_0.7Sr_0.3TiO₃ ferroelectric film prepared with the sol-gel process and its dielectric performance in planar capacitor structure. Journal of Materials Research, 13, 1998: 1243-1248.

Beleznai Cs., Nánai L, Leppävuori S, Remes J, Moilanen H & George TF (1998) Nickel deposition on silicon surfaces. SPIE, 3573: 116-119.

Jakku E, Hagberg J & Leppävuori S (1998) Gives the new stripline structure more power for HTS microwave filters? The 43^rd International Scientific Colloquium (IWK’98), 21-24 September 1998, Ilmenau, Germany: 340-344.

Kruusing A, Leppävuori S & Uusimäki A (1998) An ionic liquid flow sensor. Proc. of Eurosensors XII, 13-16 September 1998, Southampton, UK: 783-785.

Kruusing A, Leppävuori S & Uusimäki A (1998) Printed solenoid windings for miniature electromagnetic devices. Proc. of The Ninth Micromechanics Europe Workshop, MME ’98, 3-5 June 1998, Ulvik in Hardanger, Norway: 179-181.

Kruusing A, Uusimäki A, Leppävuori S & Moilanen H (1998) Micropump with dynamic valve actuator membrane. The 43^rd International Scientific Colloquium (IWK’98), 21-24 September 1998, Ilmenau, Germany: 359-364.

Kruusing A, Leppävuori S, Uusimäki A & Uusimäki M (1998) Mask-defined abrasive-jet micromachining. Proc. of MICRO SYSTEM Technologies 98, 6^th International Conference on Micro Electro, Opto, Mechanical Systems and Components, Potsdam, Germany, 1-3 December 1998: 673-675.

Kruusing A, Makarova O, Uusimäki A & Leppävuori S (1998) Electro-discharge machining of ceramic magnetic materials. Proceedings of the Third National DAAAM Conference in Estonia, Science´98, Tallinn, Estonia: 114-117.

Kruusing A, Uusimäki A & Leppävuori S (1998) Laser cutting of NdFeB. Materials Engineering –98, Materials of the VII International Baltic Conference, 24-25 September 1998, Jurmala, Latvia: 105-109.

Leppävuori S & Kruusing A (1998) Large displacement piezoelectric actuators and applications. Plenary paper, Proc. of Plenary Papers, Eurosensors XII, 13-16 September 1998, Southampton, UK: 4-8.

Leppävuori S & Kruusing A (1998) Piezoelectric microactuators and pumps. Invited paper, V Scientific Conference on Optoelectronic and Electronic Sensors (COE’98), 10-13 May 1998, Jurata, Poland.

Leppävuori S & Uusimäki A (1998) Use of gravure offset fine-line printing for LTCC. Invited paper, The 43^rd International Scientific Colloquium (IWK’98), 21-24 September 1998, Ilmenau, Germany: 17-22.

Lozinski A, Leppävuori S, Uusimäki A & Wang F (1998) Thick-film PLZT 32 x 1 pyroelectric array. Proc. of Eurosensors XII, 13-16 September 1998, Southampton, UK: 465-468.

Nánai L, Vajtai R, Fábián L, Szatmári S, Leppävuori S & George TF (1998) Ripple formation on GaAs surfaces by ultrafast (fs) laser pulses. SPIE, 3573: 124-125.

Tyunina M, Levoska J & Leppävuori S (1998) Pulsed laser deposition of multinary compound films. Inst. Phys. Conf. Ser. No 152: Section B: Thin Film Growth and Characterization, 1998 IOP Publishing Ltd: 205-208.

Tyunina M, Levoska J, Sternberg A & Leppävuori S (1998) Dielectric Properties of Pulsed Laser Deposited PMNT and PSNT Films. Proceedings of European Commission COST 514 1998 Workshop on Ferroelectric Thin Films, 20-21 April 1998, Ljubljana, Slovenia: 83-86.

Tyunina M, Sternberg A, Zauls V, Kundzinsh M, Shorubalko I, Levoska J, Leppävuori S, Kullmer R & Bäuerle D (1998) Composition–structure–properties relationships in pulsed laser deposited ferroelectric thin films. Materials Engineering –98, Materials of the VII International Baltic Conference, 24–25 September 1998, Jurmala, Latvia: 118-122.

Vendik IB, Kondratiev VV, Kholodniak DV, Gal’chenko SA, Deleniv AN, Goubina MN, Svishchev AA, Leppävuori S, Hagberg J, Jakku E (1998) The High-Temperature Superconductor Filters: Modeling and Experimental Investigations. 1998 Applied Superconductivity Conference, Superconductivity Coming to Market, Sept. 13-18, 1998, Marriott’s Desert Springs Resort, Palm Desert, California.

Kivilahti J, Kujala A, Isotalo H, Suni I, Vähäkangas J & Leppävuori S (1998) Uudet integroidut liitosalustat, Piirilevy on kotelo, Elektroniikan suunnittelu, Prosessori-lehden erikoisjulkaisu, Maaliskuu 1998.

Leppävuori S (1998) Annual Report 1997, Microelectronics and Material Physics Laboratories, Report T97, Dept. of Electrical Engineering, University of Oulu.

Leppävuori S & Uusimäki A (1998) Elektroniikan kehittyvät valmistusmenetelmät. Impulssi 1998: 26-28.

Leppävuori S, Vähäkangas J, Jaakola T & Uusimäki A (1998) Tulevat valmistusteknologiat, Elektroniikkatehdas 2005 –projektin loppuraportti 1998.

Vähäkangas J, Jaakola T, Leppävuori S & Uusimäki A (1998) Elektroniikan valmistusmenetelmät vuonna 2005, Katse vuosituhannen tuolle puolen, Elektroniikan suunnittelu, Prosessori-lehden erikoisjulkaisu, Maaliskuu 1998.

Jakku E, Hagberg J & Leppävuori S (1998) The effects of protective normal metal coating on HTS microwave filters. Proc. of the 5^th International Student Seminar on High Temperature Superconductors at Microwaves, 25-27 May 1998, St. Petersburg, Russia.

Jakku E, Leppävuori S, Hagberg J & Rytivaara M (1998) The use of new stripline structures in the design of HTS microwave filters. Abstract accepted to the 1st International Conference on New Theories, Discoveries and Applications of Superconductors on Related Materials, 19-24 February 1998, Baton Rouge, Louisiana, USA.

Kruusing A, Leppävuori S, Uusimäki A, Petretis B & Makarova O (1998) Micromachining of magnetic materials, Book of Abstracts, E-MRS’98, 16-19 June 1998, Strasbourg, France, H–14.

Lahti M, Leppävuori S & Lantto V (1998) Gravure offset printing technique for the fabrication of solid films. Ninth International Conference on Solid Films and Surfaces (ICSFS-9), 6-10 July 1998, Copenhagen, Denmark.

Lahti M, Leppävuori S & Lantto V (1998) Low–temperature co-fired ceramic materials for passive components in fast electronics. Proceedings of the XXXII Annual Conference of the Finnish Physical Society, 19-21 March 1998, Tampere, Finland.

Leppävuori S, Kruusing A & Uusimäki A (1998) Non-planar piezoelectric structures made by film technology. Abstract book of The 2^nd Asian Meeting on Ferroelectrics, International (AMF-2), 7-11 December 1998, Singapore.

Leppävuori S, Remes J & Moilanen H (1998) Utilization of Cu(HFAC)TMVS precursor gas in LCVD integrated circuit repair system. Invited paper, E-MRS’98, 16-19 June 1998, Strasbourg, France, G–12.

Levoska J, Tyunina M & Leppävuori S (1998) Laser ablation deposition of silicon nanostructures. The Fourth International Conference on Nanostructured Materials, NANO’98, Book of Abstracts, 14-19 June 1998, Stockholm, Sweden, 197.

Tyunina M, Levoska J. Koivusaari & Leppävuori S (1998) Agglomeration and surface morphology during pulsed laser deposition of Pb-Zr-Ti-O. The Fourth International Conference on Nanostructured Materials, NANO’98, Book of Abstracts, 14-19 June 1998, Stockholm, Sweden, 293.

Tyunina M, Levoska J, Sternberg A, Zauls V, Kundish M, Shorubalko I & Leppävuori S (1998) Microstructure and properties of relaxor ferroelectric films deposited by laser ablation. Proceedings of the XXXII Annual Conference of the Finnish Physical Society, 19-21 March 1998, Tampere, Finland.

Jakku E, Leppävuori S, Hagberg J & Rytivaara M (1999) The use of new stripline structures in the design of HTS microwave filters. Accepted for publication in Physica B.

Koivusaari KJ, Levoska J & Leppävuori S (1999) Pulsed laser deposition of diamond-like carbon, relations between laser fluence, velocity of carbon ions and bonding in the films. Journal of Applied Physics 85, in press.

Kordas K, Békési J, Bali K, Vajtai R, Nánai L, George T F & Leppävuori S (1999) UV laser-induced liquid phase palladium seeding on polymers. Submitted for publication in Physical Review B.

Kruusing A, Leppävuori S, Uusimäki A & Petretis B (1999) Micromachining of magnetic materials. Accepted for publication in Sensors and Actuators A.

Lahti M, Leppävuori S and Lantto V (1999) Gravure offset printing technique for the fabrication of solid films. Applied Surface Science, in press.

Leppävuori S, Kruusing A & Uusimäki A (1999) Non-planar piezoelectric structures made by film technology. Accepted for publication in Ferroelectrics.

Leppävuori S, Remes J & Moilanen H (1999) Utilization of Cu(HFAC)TMVS precursor gas in LCVD integrated circuit repair system. Applied Surface Science, 138-139: 123-129.

Levoska J, Tyunina M & Leppävuori S (1999) Laser ablation deposition of silicon nanostructures. Nanostructured Materials, in press.

Thäringen T, Lippold G, Riede V, Lorenz M, Koivusaari KJ, Lorenz D, Mosch S, Grau P, Hesse R, Streubel P & Szargan R (1999) Hard amorphous Csi_xN_y thin films deposited by RF nitrogen plasma assited pulsed laser ablation of mixed grpahite/Si₃N₄-targets. Accepted for publication in Thin Solid Films.

Tyunina M, Levoska J, Koivusaari J & Leppävuori S (1999) Agglomeration and surface morphology during pulsed laser deposition of Pb-Zr-Ti-O. Nanostructured Materials, in press.

Tyunina M, Levoska J & Leppävuori S (1999) Sorption in pulsed deposition of multicomponent materials experiment versus modeling. Submitted to Journal of Applied Physics.

Tyunina M, Levoska J, Sternberg A & Leppävuori S (1999) Dielectric properties of pulsed laser deposited films of PbMg_1/3Nb_2/3O₃-PbTiO₃ and PbSc_1/2Nb_1/2O₃-PbTiO₃ relaxor ferroelectrics. Submitted for publication in Journal of Applied Physics.

Tyunina M, Wittborn J, Levoska J, Sternberg A, Rao K V & Leppävuori S (1999) AFM investigations of domain configuration in pulsed laser deposited films of rhombohedral PbZr_0.65Ti_0.35O₃. Submitted for publication in Appl. Phys. Lett.