scholarly journals Metadynamics study of the temperature dependence of magnetic anisotropy and spin-reorientation transitions in ultrathin films

2019 ◽  
Vol 100 (17) ◽  
Author(s):  
Balázs Nagyfalusi ◽  
László Udvardi ◽  
László Szunyogh
Keyword(s):  
Magnetic Anisotropy ◽  
Temperature Dependence ◽  
Ultrathin Films ◽  
Spin Reorientation

scholarly journals Non-monotonic magnetic anisotropy behavior as a function of adsorbate coverage in Fe ultrathin films near the spin reorientation transition

2021 ◽  
Author(s):  
A. Quesada ◽  
G. Chen ◽  
A. T. N'Diaye ◽  
P. Wang ◽  
Y. Z. Wu ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Magnetic Anisotropy ◽  
Ultrathin Films ◽  
Co Adsorption ◽  
Spin Reorientation ◽  
Spin Reorientation Transition ◽  
Out Of Plane

Carbon monoxide (CO) adsorption on ultrathin fcc Fe films is known to result in the rotation of magnetization from out-of-plane to in-plane.

MAGNETO-OPTIC FARADAY EFFECT ON SPIN ANISOTROPIC Co ULTRATHIN FILMS AND POST-NITRIDIZATION ON ZnO(002) CRYSTAL

SPIN ◽  
2012 ◽  
Vol 02 (04) ◽  
pp. 1250017 ◽  
Author(s):  
C. W. SU ◽  
S. C. CHANG ◽  
Y. C. CHANG
Keyword(s):  
Magnetic Anisotropy ◽  
Ultrathin Films ◽  
Faraday Effect ◽  
Magnetic State ◽  
Crystal Surface ◽  
Lattice Structure ◽  
Magnetic Behavior ◽  
Spin Reorientation ◽  
Initial Growth ◽  
Magneto Optic

Perpendicular magnetic anisotropy in the initial growth of epitaxial in-plane anisotropic Co ultrathin films on the ZnO (002) crystal surface was discovered. The critical thickness of weak spin reorientation transition phenomenon in deposition process from in-plane to out-of-plane magnetic anisotropy is around 2 nm. Ultrathin 1.2 nm Co film was stabilized by post-irradiation of low-energy N ions from the observation of hysteresis loop transforming from an S-shape soft magnetic state to a square hard magnetic state. The addition of N affected the magnetic behavior. The time-dependent nitridization process was observed using Auger electron spectroscopy. Magneto-optical Faraday effect measurements were used to observe the magnetic properties of high-transmission Co/ZnO (002) and Co–N/ZnO (002) surface. A strong polar magneto-optic Faraday effect was dominated in the 2.0–4.0 nm Co/ZnO (002) surfaces. From the N+ implantation that reduces the corresponding coercivity, a hexagonal c-axis lattice structure of Co with a preferred perpendicular anisotropy on the ZnO (002) surface may be explained.

scholarly journals Magnetic Aspects and Large Exchange Bias of Ni0.9Co0.1/NiCoO Multilayers

Micro ◽  
2021 ◽  
Vol 1 (1) ◽  
pp. 43-54
Author(s):  
Dimitrios I. Anyfantis ◽  
Nikos Kanistras ◽  
Camillo Ballani ◽  
Alexandros Barnasas ◽  
Vassilios Kapaklis ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Ultrathin Films ◽  
Exchange Bias ◽  
Kerr Effect ◽  
Quantum Interference ◽  
Hysteresis Loops ◽  
Perpendicular Magnetic Anisotropy ◽  
Spin Reorientation ◽  
Temperature Hysteresis ◽  
Superconducting Quantum Interference Device

Ultrathin films of Ni0.9Co0.1 were grown by radio frequency magnetron sputtering. By means of a periodic natural oxidation procedure they were transformed into Ni0.9Co0.1/NiCoO multilayers. Room temperature hysteresis loops recorded via the magneto-optic Kerr effect have revealed over all in-plane magnetic anisotropy due to magnetostatic anisotropy. Mild thermal annealing at 250 °C enhanced a tendency for perpendicular magnetic anisotropy, mainly due to an increase of the uniaxial volume anisotropy term. Spin reorientation transition, exchange bias larger than 700 Oe, and strong coercivity enhancement were observed via a superconducting quantum interference device at low temperatures after field cooling.

scholarly journals The temperature dependence of magnetic anisotropy of Nd-Fe-B thin films

AIP Advances ◽  
2018 ◽  
Vol 8 (5) ◽  
pp. 056213 ◽  
Author(s):  
Takuya Sato ◽  
Ryuji Hashimoto ◽  
Yoshitomo Tanaka ◽  
Kenichi Suzuki ◽  
Yasushi Enokido ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Anisotropy ◽  
Temperature Dependence

INFLUENCE OF AN EXTERNAL MAGNETIC FIELD ON THE DYNAMICS OF A NEW-PHASE NUCLEUS IN THE VICINITY OF THE FIRST-ORDER PHASE TRANSITION IN MAGNETS WITH DEFECTS PRESENT

2012 ◽  
Vol 26 (28) ◽  
pp. 1250183 ◽  
Author(s):  
VLADIMIR NAZAROV ◽  
RISHAT SHAFEEV
Keyword(s):  
Magnetic Field ◽  
Phase Transition ◽  
External Magnetic Field ◽  
Magnetic Anisotropy ◽  
Spin Reorientation ◽  
Critical Fields ◽  
First Order ◽  
Phase Nucleus ◽  
First Order Phase Transition ◽  
New Phase

Theoretically, with the aid of a soliton model, the evolution of a new-phase nucleus near the first-order spin-reorientation phase transition in magnets has been investigated in an external magnetic field. The influence of an external field and one-dimensional defects of magnetic anisotropy on the dynamics of such nucleus has been demonstrated. The conditions for the localization of the new-phase nucleus in the region of the magnetic anisotropy defect and for its escape from the defect have been determined. The values of the critical fields which bring about the sample magnetization reversal have been identified and estimated.

Magnetic anisotropy and spin reorientation in Co/Pt multilayers: Influence of preparation

2010 ◽  
Vol 322 (9-12) ◽  
pp. 1353-1356 ◽  
Author(s):  
Holger Stillrich ◽  
Christian Menk ◽  
Robert Frömter ◽  
Hans Peter Oepen
Keyword(s):  
Magnetic Anisotropy ◽  
Spin Reorientation
Sign in / Sign up

Export Citation Format

Share Document