Aluminum and boron nuclear quadrupole resonance with a direct current superconducting quantum interference device

Journal Article · Sat Dec 01 04:00:00 EST 1990 · Journal of Chemical Physics; (USA)

DOI:https://doi.org/10.1063/1.459395· OSTI ID:6257140

Connor, C; Chang, J; Pines, A ^[1]

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1. Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, CA (USA) Department of Chemistry, University of California, Berkeley, CA (USA)

We report the application of our dc SQUID (superconducting quantum interference device) spectrometer (C. Connor, J. Chang, and A. Pines, Rev. Sci. Instrum. {bold 61}, 1059(1990)) to nuclear quadrupole resonance (NQR) studies of aluminum-27, and boron-11 in crystalline and glassy solids. Our results give {ital e}{sup 2}{ital qQ}/{ital h}=2.38 MHz and {eta}=0.0 for {alpha}--Al{sub 2}O{sub 3} at 4.2 K. For the natural mineral petalite (LiAlSi{sub 4}O{sub 10}), we obtain {ital e}{sup 2}{ital qQ}/{ital h}=4.56 MHz and {eta}=0.47. The quadrupole resonance frequency is 1467 kHz in boron nitride, and in the vicinity of 1300 kHz for various borates in the B{sub 2}O{sub 3}{center dot}{ital x}H{sub 2}O system. The distribution of boron environments in a B{sub 2}O{sub 3} glass gives rise to a linewidth of about 80 kHz in the SQUID detected resonance.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6257140
• Journal Information: Journal of Chemical Physics; (USA), Journal Name: Journal of Chemical Physics; (USA) Vol. 93:11; ISSN JCPSA; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
426001 -- Engineering-- Superconducting Devices & Circuits-- (1990-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM 27
ALUMINIUM COMPOUNDS
ALUMINIUM ISOTOPES
ALUMINIUM OXIDES
BORON 11
BORON COMPOUNDS
BORON ISOTOPES
BORON NITRIDES
BORON OXIDES
CHALCOGENIDES
CRYSTALS
ELECTRONIC EQUIPMENT
EQUIPMENT
FLUXMETERS
GLASS
ISOTOPES
LIGHT NUCLEI
LINE WIDTHS
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
MINERALS
NITRIDES
NITROGEN COMPOUNDS
NUCLEAR QUADRUPOLE RESONANCE
NUCLEI
ODD-EVEN NUCLEI
OXIDES
OXYGEN COMPOUNDS
PETALITE
PNICTIDES
RESONANCE
SILICATE MINERALS
SQUID DEVICES
STABLE ISOTOPES
SUPERCONDUCTING DEVICES