Small-angle neutron scattering from YBa{sub 2}Cu{sub 3}O{sub 7} and Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} near the critical temperature
- Cavendish Lab., Cambridge (United Kingdom)
One of the 30 meter small-angle neutron scattering spectrometers at NIST has been used to measure the scattering from HBa{sub 2}Cu{sub 3}O{sub 7} and Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} at a range of temperatures from 35 K to 135 K with wavevector transfers Q form 0.01 {angstrom}{sup {minus}1} to 0.08 {angstrom}{sup {minus}1}. Considerable attention was paid to sample preparation in order to reduce the background scattering from crystalline defects and stoichiometric variations in the sample. For both materials, the difference in the differential scattering cross-sections at the critical temperature {Tc} and at temperatures of {Tc} {+-} 20 K showed considerable structure in Q, corresponding to spatial variations in the neutron scattering potential with Fourier components of wavelength of the order of 100 {angstrom}
- OSTI ID:
- 225301
- Report Number(s):
- CONF-941144-; ISBN 1-55899-278-2; TRN: IM9621%%231
- Resource Relation:
- Conference: Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 28 Nov - 9 Dec 1994; Other Information: PBD: 1995; Related Information: Is Part Of Neutron scattering in materials science 2; Neumann, D.A. [ed.] [National Inst. of Standards and Technology, Gaithersburg, MD (United States)]; Russell, T.P. [ed.] [IBM Almaden Research Center, San Jose, CA (United States)]; Wuensch, B.J. [ed.] [Massachusetts Inst. of Tech., Cambridge, MA (United States)]; PB: 813 p.; Materials Research Society symposium proceedings, Volume 376
- Country of Publication:
- United States
- Language:
- English
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