Imperial College London

ProfessorNeilAlford

Central FacultyOffice of the Provost

Associate Provost (Academic Planning)
 
 
 
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Contact

 

+44 (0)20 7594 6724n.alford

 
 
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Assistant

 

Miss Catherine Graham +44 (0)20 7594 3330

 
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Location

 

2..05 (in RSM) or 3.09 (in the Faculty Building)Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

406 results found

ALFORD NEIL MCNEILL, PETROV PETER KRASTEV, 2006, TUNABLE OR RE-CONFIGURABLE DIELECTRIC RESONATOR FILTER, WO2006059159

Patent

Dunne LJ, Axelsson AK, Alford NM, Breeze J, Aupi X, Brandas EJet al., 2006, Quasi-classical fluctuation-dissipation description of dielectric loss in oxides with implications for quantum information processing, INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY, Vol: 106, Pages: 986-993, ISSN: 0020-7608

Journal article

Alford N, Petrov P, Salinas E, Dimitriou S, Hilton Ret al., 2006, Transforming electronics, MATERIALS WORLD, Vol: 14, Pages: 18-19, ISSN: 0967-8638

Journal article

Kamba S, Noujni D, Pashkin A, Petzelt J, Pullar RC, Axelsson A-K, Alford NMet al., 2006, Low-temperature microwave and THz dielectric response in novel microwave ceramics, 3rd International Conference on Microwave Materials and Their Applications, Publisher: ELSEVIER SCI LTD, Pages: 1845-1851, ISSN: 0955-2219

Conference paper

Rawal R, Feteira A, Hyatt NC, Sinclair DC, Sarma K, Alford NMet al., 2006, Microwave dielectric properties of hexagonal 12R-Ba3LaNb3O12 ceramics, JOURNAL OF THE AMERICAN CERAMIC SOCIETY, Vol: 89, Pages: 332-335, ISSN: 0002-7820

Journal article

Rawal R, Feteira A, Flores AA, Hyatt NC, West AR, Sinclair DC, Sarma K, Alford NMet al., 2006, Dielectric properties of the "twinned" 8H-hexagonal perovskite Ba8Nb4Ti3O24, JOURNAL OF THE AMERICAN CERAMIC SOCIETY, Vol: 89, Pages: 336-339, ISSN: 0002-7820

Journal article

Axelsson AK, Alford NM, 2006, Bismuth titanates candidates for high permittivity LTCC, 3rd International Conference on Microwave Materials and Their Applications, Publisher: ELSEVIER SCI LTD, Pages: 1933-1936, ISSN: 0955-2219

Conference paper

Pullar RC, Lai C, Alford NM, 2006, V2O5-doped M2+Cu2Nb2O8 compounds (M2+ = Zn, Co, Ni, Mg & Ca) for microwave dielectric LTCCs, 3rd International Materials Symposium/12th Meeting of the Sociedad-Portuguesa-da-Materials (Materials 2005/SPM), Publisher: TRANS TECH PUBLICATIONS LTD, Pages: 264-268, ISSN: 0255-5476

Conference paper

Pullar RC, Lai C, Azough F, Freer R, Alford NMet al., 2006, Novel microwave dielectric LTCCs based upon V2O5 doped M2+Cu2Nb2O8 compounds (M2+ = Zn, Co, Ni, Mg and Ca), 3rd International Conference on Microwave Materials and Their Applications, Publisher: ELSEVIER SCI LTD, Pages: 1943-1946, ISSN: 0955-2219

Conference paper

Petrov PK, Palkar VR, Alford NMN, Tagantsev AK, Prashanthi K, Chien HI, Axelsson AK, Bhattacharya Set al., 2006, Microwave responce from La- and Dy- doped BiFeO<inf>3</inf> thin films, Pages: 28-33, ISSN: 0272-9172

The dielectric response of La- and Dy- doped BiFeO3 thin films to electric- and magnetic fields was measured at microwave frequencies (up to 12GHz) in a temperature range from 25°C to 300°C. Interesting phenomena were observed. Significant oscillations in the C(f) characteristic which were unaffected by the electric field or by elevated temperature but which were dampened by a magnetic field. We also observed 'N'-type I-V characteristics. A possible explanation for this mesoscopic response is the presence of structural features that cause resonance (e.g. grains, grain-boundaries, domains, domain walls etc), with a contribution strong enough to be averaged by the system. The exact origin of these features is unknown at present. © 2007 Materials Research Society.

Conference paper

Krupka J, Breeze J, Alford NMN, Centeno AE, Jensen L, Claussen Tet al., 2006, Measurements of permittivity and dielectric loss tangent of high resistivity float zone silicon at microwave frequencies

Real part of permittivity and the dielectric loss tangent of float zone high resistivity Silicon were measured at microwave frequencies at temperatures from 10 K up to 380 K employing dielectric resonator technique. The real part of permittivity proved to be frequency independent and the decrease in dielectric loss tangent versus frequency proved to be not entirely proportional to the inverse of frequency. At temperatures below 25 K where all free carriers are frozen-out loss tangents values the order of 10-4 were measured.

Conference paper

Alford NM, Petrov PK, Gagarin AG, Kozyrev AB, Sokolov AI, Soldatenkov OI, Volpyas VAet al., 2005, Enhanced electrical properties of ferroelectric thin films by ultraviolet radiation, APPLIED PHYSICS LETTERS, Vol: 87, ISSN: 0003-6951

Journal article

Petrov PK, Alford NM, 2005, Improved SrTiO3 thin films using oxygen relaxation technique, APPLIED PHYSICS LETTERS, Vol: 87, ISSN: 0003-6951

Journal article

Pullar RC, Breeze JD, Alford NM, 2005, Characterization and microwave dielectric properties of M2+Nb2O6 ceramics, JOURNAL OF THE AMERICAN CERAMIC SOCIETY, Vol: 88, Pages: 2466-2471, ISSN: 0002-7820

Journal article

Petrov PK, Alford NMN, Gevorgyan S, 2005, Techniques for microwave measurements of ferroelectric thin films and their associated error and limitations, MEASUREMENT SCIENCE AND TECHNOLOGY, Vol: 16, Pages: 583-589, ISSN: 0957-0233

Journal article

Alford NM, Buslov O, Keis V, Kotelnikov I, Kozyrev A, Kulik P, Petrov PKet al., 2005, Tunable 4-pole piezoelectric filter based on two dielectric resonators, INTEGRATED FERROELECTRICS, Vol: 77, Pages: 123-128, ISSN: 1058-4587

Journal article

Walters RA, Centeno A, Petrov PK, McN Alford Net al., 2005, Tuneable end-coupled ferroelectric-gap filters based on barium strontium titanate capacitors, Asia-Pacific Conference on Applied Electromagnetics (APACE 2005), Publisher: IEEE, Pages: 250-252

Conference paper

Fradkin L, Mishakin V, Alford N, 2005, Re-directing slow cracks in PMMA, PHILOSOPHICAL MAGAZINE, Vol: 85, Pages: 2345-2361, ISSN: 1478-6435

Journal article

Aupi X, Breeze J, Ljepojevic N, Dunne LJ, Malde N, Axelsson AK, Alford NMet al., 2004, Microwave dielectric loss in oxides: Theory and experiment (vol 95, pg 2639, 2004), JOURNAL OF APPLIED PHYSICS, Vol: 96, Pages: 6943-6943, ISSN: 0021-8979

Journal article

ALFORD NEIL MCNEILL, PENN STUART JAMES, 2004, Temperature stabilization of dielectric resonator, US6803132

Patent

Sebastian MT, Santha N, Bijumon PV, Axelsson AK, Alford NMet al., 2004, Microwave dielectric properties of (1-x)CeO2-xCaO2-xTiO3 and (1-x)CeO2-xSM2O3 ceramics, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, Vol: 24, Pages: 2583-2589, ISSN: 0955-2219

Journal article

Alford N, 2004, Microwave mania, MATERIALS WORLD, Vol: 12, Pages: 21-23, ISSN: 0967-8638

Journal article

Kamba S, Hughes H, Noujni D, Surendran S, Pullar RC, Samoukhina P, Petzelt J, Freer R, Alford NM, Iddles DMet al., 2004, Relationship between microwave and lattice vibration properties in Ba(Zn1/3Nb2/3)O-3-based microwave dielectric ceramics, JOURNAL OF PHYSICS D-APPLIED PHYSICS, Vol: 37, Pages: 1980-1986, ISSN: 0022-3727

Journal article

PETROV PETER, ALFORD NEIL, 2004, Tuneable dielectric resonator, US2004135655

Patent

Keith GM, Sarma K, Alford NM, Sinclair DCet al., 2004, Electrical properties of 6H-BaTi0.95M0.0O3-delta ceramics where M = Mn, Fe, Co and Ni, International Conference on Electroceramics (ICE 2003), Publisher: KLUWER ACADEMIC PUBL, Pages: 305-309, ISSN: 1385-3449

Conference paper

Santha NL, Sebastian MT, Mohanan P, Alford NM, Sarma K, Pullar RC, Kamba S, Pashkin A, Samukhina P, Petzelt Jet al., 2004, Effect of doping on the dielectric properties of cerium oxide in the microwave and far-infrared frequency range, JOURNAL OF THE AMERICAN CERAMIC SOCIETY, Vol: 87, Pages: 1233-1237, ISSN: 0002-7820

Journal article

Keith GM, Kirk CA, Sarma K, Alford NM, Cussen EJ, Rosseinsky MJ, Sinclair DCet al., 2004, Synthesis, crystal structure, and characterization of Ba(Ti1/2Mn1/2)O-3: A high permittivity 12R-type hexagonal perovskite, CHEMISTRY OF MATERIALS, Vol: 16, Pages: 2007-2015, ISSN: 0897-4756

Journal article

Seabra MP, Avdeev M, Ferreira VM, Pullar RC, Alford NM, Reaney IMet al., 2004, Structure-property relations in xBaTiO(3)-(1-x)La(Mg1/2Ti1/2)O-3 solid solutions, JOURNAL OF THE AMERICAN CERAMIC SOCIETY, Vol: 87, Pages: 584-590, ISSN: 0002-7820

Journal article

Aupi X, Breeze J, Ljepojevic N, Dunne LJ, Malde N, Axelsson AK, Alford NMet al., 2004, Microwave dielectric loss in oxides: Theory and experiment, JOURNAL OF APPLIED PHYSICS, Vol: 95, Pages: 2639-2645, ISSN: 0021-8979

Journal article

Pullar RC, Vaughan C, Alford NM, 2004, The effects of sintering aids upon dielectric microwave properties of columbite niobates, M2+Nb2O6, Conference on Dielectrics for Emerging Technologies held at the IOP Physics Congress, Publisher: IOP PUBLISHING LTD, Pages: 348-352, ISSN: 0022-3727

Conference paper

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