Fulfilling the 2(N+1)2 Hirsch rule in smaller hollow fullerenes. Evaluation of long-range magnetic behavior and NMR patterns of C28 , C284−, C24 N4, and C28 H4

2018 ◽  
Vol 118 (19) ◽  
pp. e25645 ◽  
Author(s):  
Alvaro Muñoz-Castro
Keyword(s):  
Long Range ◽  
Magnetic Behavior

scholarly journals From intermediate valence to magnetic behavior without long-range order by hydrogenation of the ternary gallide CeNiGa

2005 ◽  
Vol 71 (21) ◽  
Author(s):  
B. Chevalier ◽  
J. Sanchez Marcos ◽  
J. Rodriguez Fernandez ◽  
M. Pasturel ◽  
F. Weill
Keyword(s):  
Long Range ◽  
Magnetic Behavior ◽  
Range Order ◽  
Long Range Order ◽  
Intermediate Valence

Cu(HCO2)2(pym) (pym = pyrimidine):  Low-Dimensional Magnetic Behavior and Long-Range Ordering in a Quantum-Spin Lattice

2005 ◽  
Vol 44 (4) ◽  
pp. 989-995 ◽  
Author(s):  
J. L. Manson ◽  
T. Lancaster ◽  
L. C. Chapon ◽  
S. J. Blundell ◽  
J. A. Schlueter ◽  
...  
Keyword(s):  
Long Range ◽  
Magnetic Behavior ◽  
Quantum Spin ◽  
Spin Lattice ◽  
Long Range Ordering ◽  
Low Dimensional

scholarly journals Single Diameter Modulation Effects on Ni Nanowire Array Magnetization Reversal

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3403
Author(s):  
Luis C. C. Arzuza ◽  
Victor Vega ◽  
Victor M. Prida ◽  
Karoline O. Moura ◽  
Kleber R. Pirota ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Domain Wall ◽  
Long Range ◽  
Magnetization Reversal ◽  
Nanowire Array ◽  
Magnetic Behavior ◽  
Nanowire Arrays ◽  
Magnetic Nanowires ◽  
Range Interaction ◽  
Domain Wall Propagation

Geometrically modulated magnetic nanowires are a simple yet efficient strategy to modify the magnetic domain wall propagation since a simple diameter modulation can achieve its pinning during the nanowire magnetization reversal. However, in dense systems of parallel nanowires, the stray fields arising at the diameter interface can interfere with the domain wall propagation in the neighboring nanowires. Therefore, the magnetic behavior of diameter-modulated nanowire arrays can be quite complex and depending on both short and long-range interaction fields, as well as the nanowire geometric dimensions. We applied the first-order reversal curve (FORC) method to bi-segmented Ni nanowire arrays varying the wide segment (45–65 nm diameter, 2.5–10.0 μm length). The FORC results indicate a magnetic behavior modification depending on its length/diameter aspect ratio. The distributions either exhibit a strong extension along the coercivity axis or a main distribution finishing by a fork feature, whereas the extension greatly reduces in amplitude. With the help of micromagnetic simulations, we propose that a low aspect ratio stabilizes pinned domain walls at the diameter modulation during the magnetization reversal. In this case, long-range axial interaction fields nucleate a domain wall at the nanowire extremities, while short-range ones could induce a nucleation at the diameter interface. However, regardless of the wide segment aspect ratio, the magnetization reversal is governed by the local radial stray fields of the modulation near null magnetization. Our findings demonstrate the capacity of distinguishing between complex magnetic behaviors involving convoluted interaction fields.

Aromatic and antiaromatic spherical structures: use of long-range magnetic behavior as an aromatic indicator for bare icosahedral [Al@Al12]− and [Si12]2− clusters

2017 ◽  
Vol 19 (24) ◽  
pp. 15667-15670 ◽  
Author(s):  
A. Muñoz-Castro ◽  
R. Bruce King
Keyword(s):  
Long Range ◽  
Magnetic Behavior ◽  
Spherical Structures ◽  
Endohedral Clusters ◽  
Antiaromatic Character

Long-range magnetic behavior unravels aromatic/antiaromatic character equally in hollow or endohedral clusters.

Lorentz electron microscopy of magnetic domains in rapidly solidified and annealed Pt-Co-B alloys

1991 ◽  
Vol 49 ◽  
pp. 784-785
Author(s):  
N. Qiu ◽  
J. E. Wittig
Keyword(s):  
Rapid Solidification ◽  
Ion Beam ◽  
Magnetic Behavior ◽  
High Coercivity ◽  
Magnetic Domains ◽  
Beam Angle ◽  
Tem Analysis ◽  
Intrinsic Coercivity ◽  
Hard Magnets ◽  
Rapidly Solidified

PtCo hard magnets have specialized applications owing to their relatively high coercivity combined with corrosion resistance and ductility. Increased intrinsic coercivity has been recently obtained by rapid solidification processing of PtCo alloys containing boron. After rapid solidification by double anvil splat quenching and subsequent annealing for 30 minutes at 650°C, an alloy with composition Pt42Co45B13 (at.%) exhibited intrinsic coercivity up to 14kOe. This represents a significant improvement compared to the average coercivities in conventional binary PtCo alloys of 5 to 8 kOe.Rapidly solidified specimens of Pt42Co45B13 (at.%) were annealed at 650°C and 800°C for 30 minutes. The magnetic behavior was characterized by measuring the coercive force (Hc). Samples for TEM analysis were mechanically thinned to 100 μm, dimpled to about 30 nm, and ion milled to electron transparency in a Gatan Duomill at 5 kV and 1 mA gun current. The incident ion beam angle was set at 15° and the samples were liquid nitrogen cooled during milling. These samples were analyzed with a Philips CM20T TEM/STEM operated at 200 kV.

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