The Magnetic Susceptibility of Chromium

McGuire, T. R.; Kriessman, C. J.

doi:10.1103/physrev.85.452

Cited by 40 publications

(10 citation statements)

References 13 publications

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“…This was also the case in the IFM (Sc 1−x Lu x ) 3.1 In [19]. The Curie-Weiss-like behavior has been observed in the doped IFMs ZrZn 2 and Sc 3.1 In [17,19], but not in the archetypical 3D IAFM Cr, in which the magnetization increased on warming [28]. The magnetic susceptibility of Cr is in disagreement with the self-consistent renormalization (SCR) theory, which predicts Curie-Weiss-like behavior for both the 2D [29] and 3D [30] antiferromagnets.…”

mentioning

confidence: 56%

Quantum critical point in the Sc-doped itinerant antiferromagnet TiAu

et al. 2017

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confidence: 56%

Quantum critical point in the Sc-doped itinerant antiferromagnet TiAu

et al. 2017

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“…28,29 In the case of uncapped NPs, the dipolar fields exhibited due to the single domain state of the NPs are randomly distributed over the sample, since the magnetization orientation is random. However, as the paramagnetic susceptibility of Cr is positive, 30 the dipolar field lines are enhanced in the Cr film, which, in turn, reinforces the dipolar interaction among the nanoparticles. Hence, the coupling leads to an increase of the effective magnetic volume and an increase of the blocking temperature as observed.…”

Section: Discussionmentioning

confidence: 99%

Shift of the blocking temperature of Co nanoparticles by Cr capping

Ewerlin

Petracic

Demirbas

et al. 2013

Journal of Applied Physics

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Correlation between saturation magnetization, bandgap, and lattice volume of transition metal ( M = Cr , Mn, Fe, Co, or Ni) doped Zn 1 − x M x O nanoparticles J. Appl. Phys. 107, 09E314 (2010) We have studied the effect of Cr capping on the magnetic properties of Co nanoparticles (NPs). The NPs have an average diameter of 2.2 nm. The blocking temperature T B of the bare Co particles is 13.2 K. By capping with a thin Cr layer up to a thickness of t Cr ¼ 0.52 nm, we first observe a decrease of T B up to t Cr ¼ 0.14 nm, followed by an increase of T B for larger thicknesses 0.14 nm t Cr 0.52 nm. X-ray magnetic circular dichroism measurements at the resonant Co and Cr L 3 edges confirm a magnetic polarization of Cr which is opposite to the magnetization of Co. The antiparallel alignment of Co and Cr spins at the Co/Cr interface can explain the decrease at low capping layer thickness. However, for larger Cr capping layer thicknesses, the Cr film bridges the Co NPs, mediating interparticle exchange coupling and enhancing dipolar coupling that leads to an increase of the blocking temperature. V C 2013 AIP Publishing LLC. [http://dx

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“…Due to the use of Cr during early development stages and its large susceptibility compared to the other materials used, χ = 0.0003177 (Cr) was taken. [ 22,28 ] The external field in the simulation is 7 T and aligned along the global x ‐axis ( B ext || x glob ). The cylinder axis coincides with the global z ‐axis (z cyl = z glob ).…”

Section: Methodsmentioning

confidence: 99%

Self‐Assembled Rolled‐Up Microcoils for nL Microfluidics NMR Spectroscopy

Lepucki

Egunov

Rosenkranz

et al. 2020

Adv Materials Technologies

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Several attempts are made to downscale nuclear magnetic resonance (NMR) spectroscopy systems and to enable high resolution chemical analysis of small sample quantities. However, miniaturization is nontrivial due to stringent demands on precise analyte sampling within the detector while performing local excitation of the sample and signal detection with a microsized coil. Imperfect coil geometry and inhomogeneities in the coil's surrounding environment have a detrimental impact on the signal quality, hampering further development of miniature NMR systems. To solve this challenge, a new type of monolithic wafer‐scale self‐assembled microcoils with a detection volume of 1.5 nL are integrated into a microfluidics circuit. The microcoils are fully encapsulated in polydimethylsiloxane (PDMS) allowing for simplified and precise supply of an analyte through the interior of the detector. Due to their construction, with the inner winding touching the analyte, the microcoils have an almost 100% filling factor. Magnetic field inhomogeneities are reduced through well‐defined microtubular architectures and susceptibility matched conductors. This approach results in a spectral linewidth of only 8 ppb with shimming and 22 ppb without shimming. The demonstrated methodology promotes the realization of next generation miniaturized analytical NMR systems for product monitoring, safety verification, medical testing, and material evaluation.

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The Magnetic Susceptibility of Chromium

Cited by 40 publications

References 13 publications

Quantum critical point in the Sc-doped itinerant antiferromagnet TiAu

Quantum critical point in the Sc-doped itinerant antiferromagnet TiAu

Shift of the blocking temperature of Co nanoparticles by Cr capping

Self‐Assembled Rolled‐Up Microcoils for nL Microfluidics NMR Spectroscopy

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