The phase diagram and the magnetic structure of nuclear spins in elemental copper below 60 nK
✍ Scribed by K. Siemensmeyer; M. Steiner; H. Weinfurther; K.N. Clausen; P.A. Lindgård; A.J. Annila; O.V. Lounasmaa; A.S. Oja; J.T. Tuoriniemi
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 213 KB
- Volume
- 180-181
- Category
- Article
- ISSN
- 0921-4526
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✦ Synopsis
The phase diagram for nuclear magnetic order is elemental copper and the corresponding ordering vectors were investigated by neutron diffraction at nanokelvin temperatures.
The intermediate phase is characterized by an ordering vector (0 3 $). This is the first time that this type of order is observed in an fee antiferromagnet.
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Wide-band (1 MHz) 27Ai magic-angle spinning nuclear magnetic resonance (MAS NMR) spectra were recorded for zeolite Y &/Al \_ 2.7) and high-silica (%/Al u 3.8) FAU, EMT and mixed FAU-EMT structure-type zeolites synthesized using 15crown-5 and/or 18-crown-6 ethers as templating agents. Spinning sideba