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Investigations of “soft-landed” Cd surface atoms via nuclear methods: hyperfine-field sign determination
Using refined preparation techniques, cadmium guest atoms have been positioned at different sites on the surfaces of nickel crystals. The magnetic hyperfine fields and the electric field gradients at the Cd ...
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Article
Magnetic anisotropy of Ni modified by extreme lattice expansion
The induced magnetism of isolated (Cd) adatoms, soft-landed onto ultrathin Ni layers grown pseudo-morphologically on Pd(001) (aPd = 3.8907 Å), was studied using the perturbed angular correlation (PAC) technique. ...
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Article
A study of the induced magnetism in the Au spacer layer of Co/Au/CoO exchange-bias trilayers and related systems
We report the first observation of the effects of exchange bias on the nuclear spin polarization and induced magnetic moments at a magnetic/non-magnetic interface, applying low temperature nuclear orientation (LT...
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Article
NMR/ON of 60Co Experiments on the Neutron Activated Fe-Co Alloy
The irradiation by thermal neutrons is a commonly used procedure for the preparation of radioactive samples for low-temperature nuclear orientation (LTNO) experiments. Such an irradiation is a potential source...
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Article
Experiments on the Magnetism of Sc Implanted into Metals
The study of dilute Sc impurities in either heavier d-transition metals or in alkali metal hosts is difficult due to their limited solubility; however, the large host-impurity mismatch in these systems makes them...
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Article
A study of the induced magnetic hyperfine fields in Fe/Ag multilayers
Near perpendicular magnetic hyperfine fields in 110mAg have been observed in Fe/Ag multilayers. These fields are studied by low temperature nuclear orientation (LTNO) in multilayers [Ag(x ML)/Fe(y ML)]20, with (x...
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Article
Nuclear spin-lattice relaxation of Co nuclei in a Fe/Co multilayer at low temperatures
Low-temperature nuclear orientation has been applied to the study of the nuclear spin-lattice relaxation (SLR) of60Co in the Co phase of a single-crystalline [Co(21 Å) /Fe(24 Å)]25 multilayer. The Co layers previ...
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Article
Magnetic behaviour of Tb impurities in Gd andY single crystals: a nuclear orientation study
The low temperature nuclear orientation of160Tb impurities in Gd andY single crystals has been studied in the temperature range 7–40 mK andin the external magnetic field range 0–7.3 T applied alonga-, b- andc-cry...
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Article
Nuclear orientation and NMRON in rare earths
The rare-earth or lanthanoid series of elements offers a rich ground for the study of both solid-state phenomena and nuclear physics. Some systematic investigations of these elements as host materials and as i...
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Article
Precision nuclear orientation measurements for determining mixed magnetic dipole/electric quadrupole hyperfine interactions
We report the temperature dependence of the gamma-ray anisotropies from oriented160Tb nuclei produced by neutron activation of the central portion of a high-purity single crystal Tb slab. The magnetically saturat...
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Article
Static and dynamic hyperfine interactions of Mn and Co impurities in the weak ferromagnet ZrZn2
We report the nuclear orientation of near-stoichiometric samples of ZrZn2 containing trace impurities of radioactive54Mn and60Co in the temperature range 6.5–60 mK and in applied fields between 0.2 and 5.7 T. Ana...
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Article
Magnetization of single-crystal terbium at very low temperatures by nuclear orientation
We report an investigation of the magnetization of high-purity single crystal terbium below 50 mK, using the nuclear orientation of160Tb, which substitutionally replaces naturally-occurring, monoisotopic159Tb. Th...
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Article
Fast nuclear relaxation in CoPd alloys studied by nuclear orientation-fast heating
We have studied the nuclear spin-lattice relaxation of Co nuclei in the Co concentration range from 1.6 ppm to 1%, using alloys containing radioactive60Co and a nuclear orientation-fast pulsed heating (NO-FH) met...
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Article
Nuclear orientation of the rare-earth system \(^{160} Tb\underline {Tb} \) (sc)
We report precision nuclear orientation measurements on a bulk160TbTb single crystal sample. The results of these experiments allow us to determine the hyperfine parameters for this system, as well as precise mul...
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Article
Low-temperature dynamics of local-moment systems investigated by thermal cycling methods
We report studies of the low-temperature dynamics of several dilute alloy systems in which local moments are present, using various thermal-cycling nuclear orientation methods. Determinations of nuclear spin-l...
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Article
Nuclear spin-lattice relaxation of dilute Mn in Cu, Ag, and Au
We have developed a new method of determining nuclear spinlattice relaxation times of dilute impurity nuclei in non-magnetic host metals. Direct measurement of these extremely rapid relaxation times has hither...
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Article
Nuclear quadrupole alignment in Zn, Lu, and Re and the quadrupole moments of69m Zn and177m Lu
We report low-temperature nuclear quadrupole alignment of69m Zn,177m, g Lu and186, 188Re in the corresponding metal single crystal hosts. A comparison with data on these systems from other laboratories is given, ...
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Article
Nuclear orientation of thermally prepared114mInCu by the brute-force method
We report the results of brute-force orientation experiments on several alloys of114mInCu prepared by different thermal methods, with the goal of clarifying the origins of the deviations from the theoretical nucl...
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Article
Recent developments in radiative detection of nuclear magnetic resonance
A review is given of various methods for the detection of nuclear magnetic resonance using nuclear radiations. After a discussion of the physical basis of the different methods, emphasizing their common featur...
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Article
Magnetization behavior of polycrystalline and single-crystal Tb and impurity HFI in heavy rare earths