Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Minoru M. Freund"'
Autor:
Minoru M. Freund, Friedemann Freund
Publikováno v:
American Journal of Analytical Chemistry. :342-349
Though two-thirds of Earth’s surface is covered by oceans, measurements of hydroxyl concentrations in upper mantle minerals, specifically in olivine, reportedly provide surprisingly low values. This has been interpreted to mean that there is little
Autor:
Ipek G. Kulahci, Matthew J. Winnick, Gary Cyr, Minoru M. Freund, Jeremy Tregloan-Reed, Friedemann Freund, Julia Ling
Publikováno v:
Journal of Atmospheric and Solar-Terrestrial Physics. 71:1824-1834
Pre-earthquake signals have been widely reported, including perturbations in the ionosphere. These precursory signals, though highly diverse, may be caused by just one underlying physical process: activation of highly mobile electronic charge carrier
Autor:
Friedemann Freund, Minoru M. Freund
Though ubiquitous in minerals of igneous and high-grade metamorphic rocks, peroxy defects have been widely overlooked in the past. The charge carriers of interest are positive holes, chemically equivalent to O$^-$ in a matrix of O$^{2-}$, physically
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::258a7606d23e4c03e22a1dd8aedcfed6
http://arxiv.org/abs/1502.05078
http://arxiv.org/abs/1502.05078
Autor:
Takanori Hirao, Beverly J. Smith, Shinji Sato, Andrew E. Lange, Ken Ganga, Toshio Matsumoto, Minoru M. Freund
Publikováno v:
Publications of the Astronomical Society of Japan. 48:L77-L82
Publikováno v:
Journal of Earth Science & Climatic Change.
In this paper we have focused on fundamental processes that are important for understanding the electrical properties of materials, both single crystal minerals and igneous rocks, both laboratory-grown and from natural environments. The prevailing vi
Publikováno v:
Journal of Geophysical Research: Solid Earth. 98:22209-22229
The electrical conductivity sigma of MgO single crystals shows a sharp increase at 500-800 C, in particular of sigma surface, generally attributed to surface contamination. Charge Distribution Analysis (CDA), a new technique providing information on
Publikováno v:
Journal of Materials Research. 6:1619-1622
Some peculiar positive charge carriers are thermally generated in fused silica above 500 °C. These charge carriers appear to be positive holes, chemically O− states, probably arising from dissociation of peroxy defects. The charge carriers give ri
Autor:
Minoru M. Freund
Publikováno v:
Nanosensing: Materials and Devices.
I will review recent advances in DoD nanoscience and technology (NST) at the Air Force Research Laboratory (AFRL) in the areas of nano-materials, nano-electronics, and nano-energetics. NST will profoundly change all critical aspects of maintaining a
Autor:
Andrew E. Lange, V. V. Hristov, Takanori Hirao, T. Matsumoto, S. Chegwidden, Minoru M. Freund
Publikováno v:
Review of Scientific Instruments. 66:2638-2640
We describe the design and performance of compact, low‐pass electrical filters, suitable for operation at cryogenic temperatures. The filters are two pole LC filters with a cutoff at ≊100 kHz, an attenuation of −24 dB/octave, and a stop band re
Publikováno v:
Journal of Applied Physics. 69:6031-6033
Magnetic susceptibility measurements of high purity MgO single crystals (50-wt. ppm transition metals) by means of a vibrating-sample magnetometer shows an anomaly at 800 K. At the same temperature the electric conductivity increases anomalously, the