Nmr Studies in Paramagnetic and Ferromagnetic Cr<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Be</mml:mi></mml:mrow><mml:mrow><mml:mn>12</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>

Wolcott, N. M.; Falge, R. L.; Bennett, L. H.; Watson, R. E.

doi:10.1103/physrevlett.21.546

Cited by 17 publications

(5 citation statements)

References 7 publications

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“…Instead, charge effects have so affected the bands that there is no substantial d-band character at or within kT of EF • A similar situation appears to occur in dilute alloys of Ni in Cu [235]. Knight shift results have been obtained for both transition metal sites and nonmagnetic sites in itinerant ferromagnets [236,237,14] such as ZrZn2. These systems are characterized by having ferromagnetic saturation moments, qs, which are small compared with effective moments, qc, associated with the paramag· netic susceptibility.…”

Section: Intermetallic Compoundsmentioning

confidence: 59%

“…In cases, [238] and Swartz et al [15]. such as CrBel2 [237], the NMR lines are sharp and the hyperfine fields track the magnetization, indicating that the ferromagnetism is a bulk effect, whether or not triggered by impurities. The slopes of the .% versus X plots for hyperfine fields associated with magnetic atom sites, such as Zr in ZrZn2, or Fe or Co in TiFexCo J_X , are generally small, ranging between 0 and ± 100 kOe/fJ.-B.…”

Section: Intermetallic Compoundsmentioning

confidence: 99%

See 1 more Smart Citation

Relevance of knight shift measurements to the electronic density of states

Bennett

Watson

Carter

1970

J. RES. NATL. BUR. STAN. SECT. A.

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The Knight shift, % , measures th e magne ti c hype rfin e fi eld at th e nucleu s produ ced by th e conducti on e lec tro ns whi c h are po la ri ze d in a ma gne ti c fi e ld. Kni ght s hifts are ofte n dominated by th e Pauli term a nd , in it.s mo st s impl e form , can be writte n as % = (a) x p. H ere XP is the conduction electron Pauli s pin s usce ptibility whic h de pe nd s on th e de nsity of states at th e Fe rmi le vel, N(EF), and (a ) is an a ve rage magneti c hype rfin e couplin g' cons tant associated with th e wav e function characte r at the nu c le us, 1

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Section: Intermetallic Compoundsmentioning

confidence: 59%

Section: Intermetallic Compoundsmentioning

confidence: 99%

Relevance of knight shift measurements to the electronic density of states

Bennett

Watson

Carter

1970

J. RES. NATL. BUR. STAN. SECT. A.

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“…However, MINERvA also has passive targets which are used to produce a neutrino interaction target dependence results [111,112]. The charge separation at the down stream MINOS near detector can distinguish neutrino and antineutrino interactions [113][114][115][116][117][118][119][120][121], and the high segmentation and timing of the detector allows various particle identifications [122][123][124][125][126]. Data are taken from MINOS period to NOvA period of NuMI, which means the averaged neutrino energy of earlier MINERvA data are with NuMI low energy configuration (∼3 GeV), and later data are taken with NuMI medium energy configuration (∼ 7GeV).…”

Section: Accelerator-based Neutrino Experimentsmentioning

confidence: 99%

“…Recently, there is speculation that the diffractive pion production on hydrogen may be contaminated in the MINERvA data of the coherent pion production on nuclear targets [124]. They share common kinematics, such as small momentum transfer, yet the diffractive productions don't necessarily have small vertex activity due to the proton recoil.…”

Section: Coherent Pion Productionsmentioning

confidence: 99%

Neutrino–nucleus cross sections for oscillation experiments

Katori¹,

Martini²

2017

J. Phys. G: Nucl. Part. Phys.

156

197

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Abstract. Neutrino oscillations physics is entered in the precision era. In this context accelerator-based neutrino experiments need a reduction of systematic errors to the level of a few percent. Today one of the most important sources of systematic errors are neutrinonucleus cross sections which in the hundreds-MeV to few-GeV energy region are known with a precision not exceeding 20%. In this article we review the present experimental and theoretical knowledge of the neutrino-nucleus interaction physics. After introducing neutrino oscillation physics and accelerator-based neutrino experiments, we overview general aspects of the neutrino-nucleus cross sections, both theoretical and experimental views. Then, we focus on these quantities in different reaction channels. We start with the quasielastic and quasielastic-like cross section, putting a special emphasis on multinucleon emission channel which attracted a lot of attention in the last few years. We review the main aspects of the different microscopic models for this channel by discussing analogies and differences among them. The discussion is always driven by a comparison with the experimental data. We then consider the one pion production channel where data-theory agreement remains very unsatisfactory. We describe how to interpret pion data, then we analyze in particular the puzzle related to the impossibility of theoretical models and Monte Carlo to simultaneously describe MiniBooNE and MINERvA experimental results. Inclusive cross sections are also discussed, as well as the comparison between the ν µ and ν e cross sections, relevant for the CP violation experiments. The impact of the nuclear effects on the reconstruction of neutrino energy and on the determination of the neutrino oscillation parameters is reviewed. A window to the future is finally opened by discussing projects and efforts in future detectors, beams, and analysis.

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“…To our knowledge, only one NMR experiment, made on skutterudite NpFe 4 P 12 (Np 4 þ , 5f 3 ), referred to the study of a ferromagnetic neptunium-based compound [9,10] and our data cannot unfortunately be compared to NpFe 4 P 12 due to the different oxidation state. The second explanation, is the possible sensing by the 27 Al nuclei of the ferromagnetic ordering already at room temperature as this effect can be visible in the NMR spectrum well above the ordering temperature [32,33]. Both propositions are discussed later in the text.…”

Section: Magnetizationmentioning

confidence: 95%

Ferromagnetic ordering in NpAl2: Magnetic susceptibility and Al nuclear magnetic resonance

Martel

Griveau

Eloirdi

et al. 2015

Journal of Magnetism and Magnetic Materials

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a b s t r a c tWe report on the magnetic properties of the neptunium based ferromagnetic compound NpAl 2 . We used magnetization measurements and 27 Al NMR spectroscopy to access magnetic features related to the paramagnetic and ordered states (T C ¼56 K). While very precise DC SQUID magnetization measurements confirm ferromagnetic ordering, they show a relatively small hysteresis loop at 5 K reduced with a coercive field H Co $ 3000 Oe. The variable offset cumulative spectra (VOCS) acquired in the paramagnetic state show a high sensitivity of the 27 Al nuclei spectral parameters (Knight shifts and line broadening) to the ferromagnetic ordering, even at room temperature.

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Nmr Studies in Paramagnetic and Ferromagnetic CrBe12

Cited by 17 publications

References 7 publications

Relevance of knight shift measurements to the electronic density of states

Relevance of knight shift measurements to the electronic density of states

Neutrino–nucleus cross sections for oscillation experiments

Ferromagnetic ordering in NpAl2: Magnetic susceptibility and Al nuclear magnetic resonance

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