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7. A Round-Robin Test Study of Partial Discharge Inception Voltage in Aeronautic Cables

Author

Hähner, T., Rybsky, P., Cotton, I., Lowndes, R., Albert, L., Thomas, C., Dinculescu, S., Gilbert Teyssedre, Nexans France (NEXANS), Nexans, and Teyssedre, Gilbert

Subjects
[SPI]Engineering Sciences [physics], [SPI] Engineering Sciences [physics], wire insulation, comparative methods, aeronautic cable, All-electric aircraft, partial discharges
Abstract

This work addresses the repeatability of PD Inception and Extinction Voltage (PDIV and PDEV respectively) measurements obtained on different configurations of aeronautic wires following the practical testing procedures described in different existing standards. We show that substantial differences in the results can be obtained according to sample configuration and according to the actual implementation of the standardized test procedures by different laboratories carrying out the experiments. see also: T. Hahner, P. Rybsky, I. Cotton, R. Lowndes, L. Albert, C. Thomas, S. Dinculescu, G. Teyssedre, "A round-robin test study of Partial Discharge inception voltage in aeronautic cables", Proc. 9th International Symposium on Electrical Insulating Materials (ISEIM), Waseda University, Tokyo, Japan, 13-17 Sept. 2020 (held as a virtual conference), pp. 1-7, 2020. Work carried out in the frame of the European H2020-CleanSky2 Project Hivacs, under Grant agreement ID 831838, Supplementary data: Datafile in Excel format with all original values of PDIV and PDEV obtained by the different labs available in Zenodo depository of Hivacs project

Published
2020

10. Neuigkeiten aus der Achromatopsie. Mehr als nur Schwarz-Weiß?

Author

Herbik, A, Molz, B, Baseler, H, Raz, N, Best, Pd, Ahmadi, K, Gottlob, I, Choritz, L, Gouws, A, Lowndes, R, Maguire, J, Kanowski, M, Käsmann-Kellner, B, Wieland, I, Banin, E, Levin, N, Morland, AB, and Hoffmann, MB

Subjects
ddc: 610, 610 Medical sciences, Medicine
Abstract

Achromatopsie ist eine seltene erbliche Erkrankung mit kongenitaler Funktionsstörung der Zapfen. Resultierend daraus, entfällt der Eingang der Zapfen in den visuellen Kortex. Dies wirft die Frage nach Reorganisationsprozessen bei Achromatopsie auf. Wechselwirkungen einer solchen Reorganisation[zum vollständigen Text gelangen Sie über die oben angegebene URL], 27. Jahrestagung der Regionalgesellschaft der Augenärzte Sachsen-Anhalts und Thüringens e. V.

Published
2019
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12. Poster Presentations

Author

Mitra, A., Walker, S. A., Bayer, I., Pickovsky, B., Cohen, S. M., Schmitt, S. L., Lucas, F. L., Wexner, S. D., Szilagy, E. J., Ryan, J. B., Williams, J. G., Deen, K. I., Grant, E., Kumar, D., Wiltz, O. H., Garcia, J. E., Feliciano, R., Martino, J., Solomon, M., McLeod, R. S., O'Connor, B., Steinhart, H., Greenberg, G., Cohen, Z., Meagher, A. P., Adams, W. J., Lubowski, D. Z., Ellis, C. N., Boggs, H. W., Coyle, D. J., Blakemore, W. S., Nahas, S. C., Ibrahim, R. El, Pinotti, H. W., Palakanis, K., DeNobile, J., Sweeney, B., Blankenship, C., Sun, J. H., Stiegmann, G. V., Kim, J. G., Pearlman, N. W., Landes, R. V., Hankin, R. C., Barkel, D. C., Beauregard, W. L., Poulik, M. D., Chen, J. C., Dmuchowski, C., Cho, E., Lee, P. Y., Fletcher, W. S., Sullivan, E. S., Vetto, J. T., Hull, T. L., Lavery, I. C., Saxton, J. P., McCue, J., Sheffield, J., Phillips, R., DiPierro, J., Milsom, J. W., Fazio, V. W., Strong, S. A., Vernava, III, A. M., Longo, W. E., Wade, T. P., Virgo, K. S., Coplin, M. A., Johnson, F. E., Cavina, E., Menconi, C., Ghiselli, G., Seccia, M., Tjandra, J. J., Lowndes, R., McKirdy, H., Schroeder, T., Hughes, L. E., Sentovich, S. M., Rivela, L. J., Thorson, A. G., Blatchford, G. J., Christensen, M. A., Jensen, L. L., Lowry, A. C., Miller, R., Mills, A., Durdey, P., Hock-Saive, D., Lombard, R., Jehaes, C., Markiewicz, S., Penders, L., Fontaine, F., Cusumano, P., Nelissen, G., MacDonald, A., Baxter, J. N., Bessent, R. G., Gray, H. W., Finlay, I. G., Duthie, G. S., Farouk, R., Bartolo, D. C. C., Ramanujam, P. S., Venkatesh, K. S., Oliver, G. C., Vachon, D., Eisenstat, T. E., Rubin, R. J., Salvati, E. P., Dorsey-Tyler, K. R., Harmon, G., Medwell, S. J., Binderow, S. R., Noguerás, J. J., Jagelman, D. G., Decanini, C., Bohm, B., Stolfi, V. W., Cataldo, P. A., Hadick, C., Resnikov, P., Mellinger, J. D., Cunningham, B., Vayer, Jr., A. J., Larach, S. W., Williamson, P. R., Ferrara, A., Salomon, M., Nogueras, J. J., Sullivan, J., Staniunas, R. J., Keck, J. O., Counihan, T., Marcello, P., Barrett, R. C., Oster, M., Roberts, P. L., Schoetz, D. J., Murray, J. J., Veidenheimer, M. C., Coller, J. A., Sagar, P. M., Lewis, W., Williamson, M., Holdsworth, P. J., Johnston, D., Jorge, J. M. N., Morgado, Jr., P. J., James, K., Morgado, Jr., P., Penna, C., Kartheuser, A., Tiret, E., Parc, R., McIntyre, P. B., Pemberton, J. H., Wolff, B. G., Dozois, R. R., Beart, R. W., Kelley, K. A., Harrison, J. B., Hockenberry, S. E., Williamson, M. E. R., Lewis, W. G., Sagar, P., Armstrong, D. N., Collopy, B. C., Ryan, P. J., Fink, R., Mackay, J. R., Woods, R. J., Nazarian, H. K., Kong, L. B., Fleshner, P. R., Keighley, M. R. B., Farmakis, N., Tudor, R., Wiltz, O., Wong, W. D., Goldberg, S. M., Rothenberger, D. A., Arnold, M. W., Schneebaum, S., Martin, Jr., E. W., Young, D. C., Schechter, S., Snyder, M. L., Orkin, B. A., Smith, L. E., Dean, P. A., Ramsey, P. S., Nelson, H., Barker, G., Neoptolomos, J. P., Patel, R. T., Pall, A., and Adu, D.

Published
1993
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14. American Society of Colon and Rectal Surgeons 91st Annual Convention Podium and Poster abstracts: June 7–12, 1992 San Francisco, CA

Author

Lechner, P., Lind, P., Binter, G., Golub, R. W., Kerner, B. A., Wise, Jr., W. E., Meesig, D. M., Hartmann, R. F., Khanduja, K. S., Sayre, J. W., Aguilar, P. S., Guillem, J. G., Forde, K. A., Treat, M. R., Neugut, A. I., O'Toole, K. M., Diamond, B. E., Kewenter, J., Brevinge, H., Haglind, E., Limberg, B., Elles, C. N., Boggs, W. H., Slagle, G. H., Cole, P. A., Coyle, D. J., Smith, L. E., Orkin, B., Saclarides, T. J., Sheridan, W. G., Lowndes, R. H., Young, H. L., Wong, W. D., Rothenberger, D. A., Bartolo, D. C. C., Wexner, S. D., Ger, G. C., Jorge, J. M. N., Lee, E., Nogueras, J. J., Jagelman, D. G., McKenna, K., Koltun, W. A., Bute, B., Lichliter, W., Le, T., Timmcke, A., Gathright, J. B., Mascagni, D., Hojo, K., Moriya, Y., Sugihara, K., Di, G., Zenni, G. C., Abraham, K., Dobrin, P. B., Harford, F. J., Suzuki, K., Gunderson, L., Devine, R. M., Dozois, R. R., Cavaliere, F., Pemberton, J. H., Fazio, V., Cosimelli, M., Beart, R. W., Giannarelli, D., Moran, M., Ramos, A., Rothenberger, D., Goldberg, S., Antonenko, D., Heymen, S., Gulledge, A. D., Jakate, S., Saclarides, T., Heine, J. A., Williams, J. G., VanBergen, E. H., Buie, W. D., Goldberg, S. M., Davies, N., Yates, J., Jenkins, S. A., Taylor, B. A., Bapat, B., Stern, H., Berk, T., Parker, J., Ray, P. N., McLeod, R., Cohen, Z., Rowe, J. K., Zera, R. T., Madoff, R. D., Bubrick, M. P., Roberts, J. C., Johnston, G. R., Fenney, D. A., Farouk, R., Duthie, G. S., McCue, J. L., Phillips, R. K. S., Viamonte, M., Cole, J., Gottesman, L., Solomon, M. J., McLeod, R. S., Kern, K., Jensen, L. L., Lowry, A. C., Vernava, III, A. M., Longo, W. E., Daniel, G. L., Ehrenpreis, E., Stone, J. M., Cosman, B. C., Wolfe, V. A., Nino-Murcia, M., Perkash, I., Marcello, P. W., Roberts, P. L., Schoetz, Jr., D. J., Murray, J. J., Coller, J. A., Veidenheimer, M. C., Keighley, M. R. B., Grobler, S. P., Hosie, K. B., Schmitt, S. L., James, K., Lucas, F., Peck, Donald A., Ferrara, A., Grotz, R. L., Perry, R. E., Hanson, R. B., Lewis, W. G., Holdsworth, P. J., Sagar, P. M., Johnston, D., Perry, T. G., Strong, S. A., Fazio, V. W., Lavery, I. C., Oakley, J. R., Church, J. M., Milsom, J. W., Fozard, J. B. J., Nelson, H., Schneebaum, S., Arnold, M. W., Young, D., LaValle, G. J., Petty, L., Berens, A., Mojizisik, C., Martin, E. W., Hase, K., Shatney, C. H., Trollope, M., Johnson, D., Vierra, M., Deutsch, A. A., Tulchinsky, H., Nudelman, I., Gutman, H., Reiss, R., Taylor, Brian M., Araujo, A., Bleday, R., Jessurun, J., Heine, J., Rosen, Les, Sipe, Paul, Riether, Robert, Stasik, John, Sheets, James, Khubchandani, Indru, Reiter, W., Friedberg, G., Morey, G., Goldstein, E., Williamson, P., Larach, S., Senagore, A. J., Luchtefeld, M. A., MacKeigen, J. M., Mazier, W. P., Wengert, T., Ott, M. T., Bailey, H. R., Hartendorp, P., Dailey, T. H., Church, J. C., Johansen, O. B., Daniel, N., Korst, M., Kuijpers, H. C., Pena, J. P., Christenson, C. E., Balcos, E. G., Lewis, W., Mitchell, C., MacFie, J., Hildebrandt, U., Ecker, K. W., Kraus, J., Schmid, T., Feifel, G., Tjandra, J. J., Scoggin, Steve, Frazee, Richard C., Ambroze, Jr., W. L., Nezhat, C., Pennington, E., Nezhat, F., Stolfi, V. M., Thorson, A. G., Falk, P. M., Fitzgibbons, Jr, R. J., Luukkonen, P., Järvinen, H. J., James, E., Paty, P. B., Enker, W. E., Cohen, A. M., Lauwers, G. Y., Saad, R., Birnbaum, E., DeVos, W., Fry, R., Kodner, I., Fleshman, J., Cali, R. L., Pitsch, R. M., Blatchford, G. J., Christensen, M. A., Schroeder, T. K., Easley, K. A., Ellis, C. N., Cheape, J. D., Hull, T. L., Salanga, V., Kokoszka, Joseph, Andrianopoulos, Georgia, Nelson, Richard, Abcarian, Herand, Kumar, D., Benson, M. J., Roberts, J., Martin, J. E., Swash, M., Wingate, D. L., Williams, N. S., Orkin, B. A., Emsellem, H., Dent, John, Tissaw, M. A., Shafik, A., Abel, M. E., Chiu, Y. S. Y., Russell, T. R., Volpe, P. A., Casillas, G. L., Mashas, W. E., Eastman, D. A., Grace, R. H., Anderson, J. M., Hacker, K., Heryer, J., Conner, W., Rubin, R., Eisenstat, T., Salvati, E., Oliver, G., Duberman, E., Simmang, C. L., Fry, R. D., Kodner, I. J., Fleshman, J. W., Corman, M. L., Galandiuk, S., Weiner, G. J., Kahn, D., Mitchell, E., Abdel-Nabi, H., Block, G. E., Mannella, E., Tedesco, M., Anza, M., Civalleri, D., Di Tora, P., Capussotti, L., Morandi, G. B., Tirelli, C., Da Pian, P. P., Cortesi, E., Ruggeri, E., Fitzgerald, S. D., Davis, Faith, Bowen, Phyllis, Sutter, Eileen, Kikendall, Walter, McGannon, E., Brantley, P. A., Czyrko, C., Falardeau, C., Trepashko, Don, Skosey, John, Michelassi, F., Staniunas, R. J., Vignati, P. V., Beck, D. E., Karulf, R., Roettger, R., Braidt, J., Ruoff, K., Ackroyd, F., Shellito, P., Goh, H. S., Lin, L. W., Edwards, E., Farmer, J., Walters, C. A., Hyman, N. H., Hebert, J. C., Richman, Irving M., Staren, E. D., Sessions, S. C., Scoma, R. S., Clements, B., Smink, Jr., R. D., Arai, K., Sugita, A., Yamazaki, Y., Harada, H., Fukushima, T., Armstrong, D. N., Ballantyne, G. H., Sillin, L. F., Davie, R. J., Harding, L. K., Birch, N. J., Yamanouchi, T., Bayer, I., Mitmaker, B., Gordon, P. H., Wang, E., Kynaston, H., Edelstein, P. S., Thompson, S. M., Davies, R. J., Farmer, K. C. R., Oliver, S. E., Spigelman, A. D., Bennett, P., O'Kelly, T. J., Brading, A. F., Mortensen, N. J., Paul, P., McGannon, E. M., Huth, P., Hull-Boiner, S., Pezim, M. E., Johnson, H. W., Gillespie, K. D., Willard, P., Owen, D. A., Ramsey, P. S., Leu, S. Y., Hsu, H., Al-Humadi, Adil H., Eisman, E., Tries, J., Gupta, N. C., Frick, M. P., Boman, B. M., Franceschi, D., Eckhauser, M. L., Pritchard, T., Konsten, J., Baeten, C. G. M. I., Havenith, M. G., Soeters, P. B., Lau, P. W. K., Lorentz, T. G., Wong, J., and The III In-CYT-103 Immunoscintigraphy Study Group

Published
1992
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15. Abstracts

Author

Rosen, L., Reed, J., Ufberg, D., Thorburn, H., Carter, K., Goldberg, J., Finlay, I. G., Church, J. M., Hill, G. L., Carter, F. M., Cohen, Z., McLeod, R. S., Bauer, J. J., Sher, M. E., Gelernt, I. M., Crim, R. W., Fazio, V. W., Lavery, I. C., Williams, J. G., Nemer, F. D., Rothenberger, D. A., Goldberg, S. M., Hyman, N. H., Tuckson, W. B., Deutsch, A. A., Gregoire, R., Cullen, J., Johnson, G. P., Wolff, B. G., Koltun, W., Schoetz, Jr., D. J., Roberts, P. L., Murray, J. J., Coller, J. A., Veidenheimer, M. C., Keighley, M. R. B., Hosie, K., Sakaguchi, M., Tudor, R., Kmiot, W., Ambroze, Jr., W. L., Dozois, R. R., Pemberton, J. H., Kelly, K. A., Wiltz, O., Hashmi, H., Fucini, C., Thayer, M. L., Madoff, R. D., Jacobs, D. M., Bubrick, M. P., Galandiuk, S., Tsao, J., Ilstrup, D. M., Duthie, G. S., Bartolo, D. C. C., Miller, R., Pinho, M., Kunin, J. D., Fleshman, J. W., Kodner, I. J., Fry, R. D., Wexner, S. D., Jagelman, D. G., Corredor, C., Salanga, V., Scholefield, J. H., Whatrup, C., Talbot, I. C., Northover, J. M. A., Sonnex, C., Safavi, A., Gottesman, L., Dailey, T., Moenning, S., Nightengale, S., Simonton, T., Huber, P., Odom, C., Kaplan, E., Strong, S. A., Milsom, J. W., Taylor, C. W., Cho, C. C., Stewart, W. R. C., Hartmann, R. F., Khanduja, K. S., Aguilar, P. S., Rahman, S. M., Arnold, M. W., Caushaj, P., Viratyosin, S., French, T., Madoff, R., Karamjit, S., Meesig, D. M., Macleod, C. A. H., Balcos, E. G., Buls, J. G., Nelson, H., Donohue, J. H., McKean, D. J., Leu, S. Y., Wang, S. R., Hsu, H., Ramanujam, P. S., Alberts, D. S., Clark, L., Ritenbaugh, C., Rowley, S., Kane, N., Jones, C., Davies, A., Baker, P., Neoptolemos, J. P., Devereux, D. F., Robertson, F. M., Spain, D. A., Cance, W. G., Cohen, A. M., Sigurdson, E. R., Enker, W. E., Konishi, F., Yasuda, Y., Ochiai, S., Kanazawa, K., Davis, M., Medina, V., Miller, D., Fielding, L. P., Prats, I., Berman, M., West, B., Savoca, P. E., Ballantyne, G. H., Flannery, J. T., Modlin, I. M., Tsukada, K., Jagelman, D. A., McGannon, E. M., Schroeder, T., Sakamoto, G. D., MacKeigan, J. M., Opelka, F., Timmcke, A., Gathright, J. B., Hicks, T., Ray, J., McKee, C. C., Ragland, J. J., Myers, J. O., Christie, J. P., Marrazzo, III, J., Flemming, F. X., Longo, W. E., Pollard, C. W., Nivatvongs, S., Rojanasakul, A., Jetmore, A. B., Baker, J., Wiltz, O. H., McKee, R. F., Lauder, J., Poon, F., Aitchison, M., Fleshman, James W., Dreznik, Zeev, Kodner, Ira J., Fry, Robert D., Kerner, B. A., Labow, S., Hoexter, B., Moseson, M., Cheape, J. D., Bowinkelman, K., Dziki, A. J., Malthaner, R. A., Harmon, J. W., Saini, N., Duncan, M. D., Fernicola, M. T., Fischer, B. A., Hakki, F. Z., Trad, K. S., Ugarte, R., Senagore, A. J., Mazier, W. P., Kilbride, M., Herrera, L., Goumas, W., Petrelli, N., Bailey, H. R., Huval, W. V., Max, E., Smith, K. W., Marks, G., Mohiuddin, M., Basile, M., Eitan, A., Wolff, B., Dozois, R., Devine, R., Beart, R., Kelly, A., Unti, J. A., Orsay, C. P., Pearl, R. K., Nelson, R. L., Duarte, B., Prasad, M. L., Abcarian, H., Senagore, A., Milson, J. W., Strong, S., Walshaw, R. K., Chaudry, I. H., Hojo, K., Sugihara, K., Katunuma, K., Vernava, A., Beart, R. W., Stewart, J., Diament, R. H., Salter, M., Brennan, T. G., Sheikh, F., Khubchandani, I. T., Miyajima, N., Uematsu, Y., Kodaira, S., Teramoto, T., Orrom, W. J., Duthie, G., Corne, H., Blatchford, G. J., Perry, R. E., Christensen, M. A., Thorson, A. G., Dreznik, Zeev, Wong, W. D., Jensen, L. L., Lee, K. H., Yoon, Choong, Joo, H. Z., Levien, D. H., Gibbons, S., Begos, D., Byrne, D. W., Gordon, P. H., Bégin, L. R., Mitmaker, B., Saclarides, T., Bhattacharyya, A., Britton, C., Stone, J. M., Lowry, A. C., Moran, M., Launer, D. P., McReynolds, D. G., Eastman, A. B., Peck, J. J., Rozycki, G. S., Ramanujam, Paravasthu S., Bellapravalu, Sharad, Venkatesh, Kurakurachi S., Griffin, Kathleen M., Vernava, A. M., Beckman, R., Andrus, C., Johnson, F., Herrmann, V., Kaminski, D. L., Wetter, L. A., Dinneen, M., Levitt, M., Motson, R. W., Rohrer, D. A., Bapna, M. S., Rotstein, L. E., Radhakrishnan, Jayant, Shrader, Charisse, Ravo, B., Frattaroli, F. M., Reggio, D., Litchy, W. J., Hanson, R. B., Morgado, Pedro J., Alfaro, Rodrigo, Alfonzo, Rafael, Vachon, D. A., Oliver, G. C., Eisenstat, T. E., Salvati, E. P., Rubin, R. J., Clay, R. P., Kumar, Sanath, Guillem, J. G., Levy, M. F., Hsieh, L. L., Johnson, M. D., Forde, K. A., Weinstein, I. B., Bilchik, A. J., Fleming, F. X., Pernikoff, B. J., Goldenring, J. R., Fozard, J. B., Lowndes, R. H., Young, H. L., Sackier, J., Leite, J. F. M. S., Fausto-Pontes, Martins, M. I., Kmiot, W. A., Youngs, D. J., Harding, L. K., Hesselwood, S. R., Smith, N., Hartley, M. G., Hudson, M. J., Hill, M. J., Gent, A. E., Grace, R. H., Swarbrick, E. T., Hellier, M. D., Procaccino, J. A., Oakley, J. R., Flanagan, Jr., R. A., Lapos, L., Riether, R. D., Stasik, J. J., Trostle, D. R., Sheets, J. A., Ferrara, A., Armstrong, D. N., Bjorck, S., McMillen, M. A., Nicholson, J. D., Halleran, D. R., Trivisonno, D. P., Ziegler, J. A., Lott, J., Saleeby, R., Sullivan, T., and Nelson, R.

Published
1990
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28. Allen Knott earthwork

Author

Lowndes, R A C

Abstract

Transactions of the Cumberland & Westmorland Antiquarian & Archaeological Society, 64, 94-97

Published
2008
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31. Optical and Infrared Spectroscopy

Author

Perry, C. H., Lowndes, R. P., Parrish, J. F., Tornberg, N. E., Perry, C. H., Lowndes, R. P., Parrish, J. F., and Tornberg, N. E.

Abstract

Contains research objectives, summary of research and reports on four research projects., Joint Services Electronics Programs (U. S. Army, U.S. Navy, and U. S. Air Force) under Contract DA 28-043-AMC-02536(E), National Aeronautics and Space Administration (Grant NGR-22-009-237), U. S. Air Force Cambridge Research Laboratories Contract AF 19(628)-6066

Published
2010

35. High pressure far infrared spectroscopy of ionic solids

Author

Lowndes, R. P

Subjects
Optics
Abstract

A high-pressure far-infrared cell operating at up to truly hydrostatic pressures of 8 kbar is described and used to determine the anharmonic self-energies associated with the transverse optic modes of ionic solids in which q approximately equals zero. The cell allows far-infrared studies in the spectral range below 120 reciprocal cm. The transverse optic modes were investigated to determine their mode Gruneisen constants and the pressure dependence of their inverse lifetimes in RbI, CsI, and TlCl.

Published
1974

40. Optical phonons and symmetry of tysonite lanthanide fluorides.

Author

Lowndes, R. P, Parrish, J. F, and Perry, C. H

Subjects
Physics, Solid-State
Abstract

Optical frequencies and polarizations of IR active phonons of tysonite lanthanide fluorides based on Kramers-Kronig reflectance spectra analysis

Published
1969

47. The oesophagus and chest pain

Author

Cheng, TsungO., primary, Mckirdy, H.C., additional, Lowndes, R., additional, Swift, G.L., additional, Davies, H.A., additional, Lewis, D., additional, Rhodes, J., additional, Mayou, Richard, additional, Bass, Christopher, additional, and Potts, S.G., additional

Published
1992
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48. Structures and microwave dielectric properties of Ca(1−x)Nd2x/3TiO3 ceramics

Author

Lowndes, R., Azough, F., Cernik, R., and Freer, R.

Subjects
*MOLECULAR structure, *MICROWAVES, *DIELECTRICS, *TITANIUM dioxide, *CERAMIC metals, *CRYSTAL growth, *METALLIC glasses
Abstract

Abstract: Ca(1−x)Nd2x/3TiO3 microwave dielectric ceramics were prepared by the mixed oxide route; powders were calcined at 1100°C and sintered at 1450–1500°C. High density, single phase products were obtained for all compositions. Grain sizes ranged from 1μm to 100μm. There was evidence of significant discontinuous grain growth in mid range compositions; all ceramics were characterised by complex domain structures. With increasing Nd content there was a evidence of a transition from an orthorhombic Pbnm structure to a monoclinic C2/m structure. This was accompanied by a decrease in relative permittivity (ɛ r) from 180 to 78, and decrease in the temperature coefficient of resonant frequency (τ f) from +770ppmK−1 to +200ppmK−1. The product of dielectric Q value and resonant frequency (Q × f) varied in a grossly non-systematic way, exhibiting a peak at 13,000GHz in Ca0.7Nd0.2TiO3. [Copyright &y& Elsevier]

Published
2012
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