Magnetic structure of ultrathinγ−Fefilms on Cu(001): Spin waves versus collinear magnetic ordering

2002 ◽  
Vol 66 (5) ◽  
Author(s):  
D. Spišák ◽  
J. Hafner
Author(s):  
John J. Quinn ◽  
Kyung-Soo Yi
Keyword(s):  

2004 ◽  
Vol 70 (22) ◽  
Author(s):  
J. García Soldevilla ◽  
J. A. Blanco ◽  
J. Rodríguez Fernández ◽  
J. I. Espeso ◽  
J. C. Gómez Sal ◽  
...  

1999 ◽  
Vol 11 (14) ◽  
pp. 2869-2878 ◽  
Author(s):  
A Gukasov ◽  
V P Plakhty ◽  
B Dorner ◽  
S Yu Kokovin ◽  
V N Syromyatnikov ◽  
...  

2018 ◽  
Vol 185 ◽  
pp. 06005
Author(s):  
Liudmila Gonchar ◽  
Anatoliy Nikiforov

The model of orbitally dependent magnetic structure of charge ordered insulated manganites is proposed. The model is semi-phenomenological. It allows using a few parameters to describe possible magnetic structures of compounds. The experimental crystal structure of compounds also could be taken into account. The compounds LaMnO3, La1/2Ca1/2MnO3, La1/3Ca2/3MnO3, BiMnO3 are considered.


2006 ◽  
Vol 986 ◽  
Author(s):  
Naoto Metoki

AbstractThe results of our recent neutron scattering studies on actinide ‘115’ compounds are reviewed. The itinerant many-body f-electron system and cross over to the localized character are realized only in actinide system. Actinide ‘115’ family is very interesting, because we can grow high quality single crystals of many iso-structural compounds with different number and character of f electrons and valence d electrons. Variety of the ground state have been reported, e.g. paramagnetic, itinerant magnetism, and heavy fermion superconductivity in PuCoGa5. Very recently we have intensively studied the magnetic structure in UTGa5 and NpTGa5, These compounds exhibit a variety of the magnetic structure with A-, C-, G-type antiferromagnetic and ferromagnetic ordering and canted structure. NpFeGa5 exhibits an unusual magnetic anisotropy with the direction of the magnetic moment inclined about 25 degrees from the tetragonal basal plane. On the other hand, the localized compounds RRhIn5 (R: Tb, Ho, Dy, Nd) shows the antiferromagnetic structure with q=(1/2 0 1/2). The magnetic moment is parallel to the c-axis. An identical magnetic structure in rare earth compounds is a consequence of the localized nature of 4f electrons. We found that NpFeGa5, NpNiGa5, and NpRhGa5 exhibit 5f electronic transition between the low- and high-moment states associated with a change in the direction of the magnetic moment. The diverse magnetic ordering and the 5f electronic transition suggest that the orbital degree-of-freedom of itinerant 5f electrons may play important role for the physical properties in many body f-electron systems. Actually a localized model predicts the magnetic structure and the phase diagram with magnetic and quarupolar order parameters. A resonant X-ray scattering study is in progress, if the predicted antiferroquadrupole order coexists with the canting antiferromagnetic dipole order in NpNiGa5.


2001 ◽  
Vol 64 (5) ◽  
Author(s):  
M. Kenzelmann ◽  
A. Zheludev ◽  
S. Raymond ◽  
E. Ressouche ◽  
T. Masuda ◽  
...  
Keyword(s):  

2002 ◽  
Vol 755 ◽  
Author(s):  
Andrew L. Hector ◽  
Alexander I. MacDonald ◽  
Daniel J. Price ◽  
Mark T. Weller

ABSTRACTK2NiF4-type iron(III) oxides show a very common form of magnetic ordering, XY antiferromagnetic ordering within the layers combined with layer stacking based on alignment of spins in alternate layers. The Ising antiferromagnet Ca2MnO4 has been reported to have a doubled c-axis (ca 24Å) in the magnetic structure and we have found a similar stacking in the XY antiferromagnet Sr2FeO3F. We show here that this unusual c-axis doubling is related to the exposure of the material to air and suggest that in both Sr2FeO3F and Ca2MnO4 it may be related to the occupation of interstitial sites.


2015 ◽  
Vol 3 (37) ◽  
pp. 9657-9663 ◽  
Author(s):  
Z. Zhu ◽  
Z. H. Zhang ◽  
D. Wang ◽  
X. Q. Deng ◽  
Z. Q. Fan ◽  
...  

AGNR–Mn–F2 is shown to be an excellent half-metal with a wide bandgap and a stable magnetic ordering at a very high Curie temperature, as well as being predicted that this structure can stably exist in experiment. And it also displays outstanding magnetic device natures.


Sign in / Sign up

Export Citation Format

Share Document