scholarly journals Mössbauer measurements of GaFeO3 single crystal multiferroic

2021 ◽  
Vol 242 (1) ◽  
Author(s):  
K. Szymański ◽  
W. Olszewski ◽  
P. Butkiewicz ◽  
M. Biernacka ◽  
D. Satuła ◽  
...  
Keyword(s):  
Single Crystal ◽  
Easy Axis ◽  
Magnetic Moments ◽  
Electric Quadrupole ◽  
Small Component ◽  
Quadrupole Interactions ◽  
Mössbauer Measurements ◽  
Magnetic Easy Axis ◽  
Mössbauer Data ◽  
Ferrimagnetic Structure

AbstractMössbauer measurements on single crystal absorbers at room and at low temperatures were performed. The results are fully consistent with previously published reports by other groups. Spectra of single crystals were simultaneously analyzed including magnetic dipole and electric quadrupole interactions. The analysis shows that there is a small component of magnetic moments perpendicular to the magnetic easy axis. Mössbauer data seem not agree with commonly accepted ferrimagnetic structure of GaFeO3.

scholarly journals NMR Detection of Oxygen Isotopes in TiO2 Single Crystal

1998 ◽  
Vol 53 (6-7) ◽  
pp. 305-308
Author(s):  
M. Tanigaki ◽  
S. Takeda ◽  
K. Matsuta ◽  
Y. Matsumoto ◽  
T. Minamisono ◽  
...  
Keyword(s):  
Single Crystal ◽  
Quadrupole Moment ◽  
Oxygen Isotopes ◽  
Electric Quadrupole ◽  
Coupling Constants ◽  
Quadrupole Moments ◽  
Quadrupole Interactions ◽  
Quadrupole Coupling ◽  
Nmr Signals

Abstract We studied the electric quadrupole interactions of Oxygen isotopes in a TiO2 single crystal. For 13O and 19O nuclei, quadrupole coupling constants were measured by the β-NMR technique, and for the 17O nucleus the FT-NMR technique was utilized. We synthesized a TiO2 single crystal which was enriched in 17O up to 5 atom % to observe NMR signals without any perturbations from impurities. Using the known quadrupole moment of 17O, EFGs at an O site in TiO2 and the quadrupole moments of 13O and 19O were determined.

Experimental and theoretical evidence that electrostatics governs easy-axis orientation in DyIII-based molecular chains

2014 ◽  
Vol 50 (87) ◽  
pp. 13346-13348 ◽  
Author(s):  
Julie Jung ◽  
François Le Natur ◽  
Olivier Cador ◽  
Fabrice Pointillart ◽  
Guillaume Calvez ◽  
...  
Keyword(s):  
Single Crystal ◽  
Ab Initio ◽  
Easy Axis ◽  
Molecular Chain ◽  
Slow Relaxation ◽  
Axis Orientation ◽  
Magnetic Easy Axis ◽  
Theoretical Evidence

Magnetic slow relaxation is observed in a DyIII-based molecular chain and the magnetic easy-axis is determined via single-crystal magnetometry and ab initio calculations.

scholarly journals Single Crystal Growth and Physical Properties of Pyroxene CoGeO3

Crystals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 378
Author(s):  
Li Zhao ◽  
Zhiwei Hu ◽  
Hanjie Guo ◽  
Christoph Geibel ◽  
Hong-Ji Lin ◽  
...  
Keyword(s):  
High Pressure ◽  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Crystal Growth ◽  
Physical Properties ◽  
Single Crystal ◽  
Single Crystals ◽  
Magnetic Moments ◽  
Single Crystal Growth ◽  
The Impact

We report on the synthesis and physical properties of cm-sized CoGeO3 single crystals grown in a high pressure mirror furnace at pressures of 80 bar. Direction dependent magnetic susceptibility measurements on our single crystals reveal highly anisotropic magnetic properties that we attribute to the impact of strong single ion anisotropy appearing in this system with TN∼33.5 K. Furthermore, we observe effective magnetic moments that are exceeding the spin only values of the Co ions, which reveals the presence of sizable orbital moments in CoGeO3.

Expansion and Collapse of Domains With Reverse Magnetization in (Ga,Mn)As Epilayers With Perpendicular Magnetic Easy Axis

2007 ◽  
Vol 43 (6) ◽  
pp. 3022-3024 ◽  
Author(s):  
A. Dourlat ◽  
C. Gourdon ◽  
V. Jeudy ◽  
C. Testelin ◽  
K. Khazen ◽  
...  
Keyword(s):  
Easy Axis ◽  
Magnetic Easy Axis ◽  
Reverse Magnetization

scholarly journals Influence of the electrodeposition potential on the crystallographic structure and effective magnetic easy axis of cobalt nanowires

RSC Advances ◽  
2016 ◽  
Vol 6 (17) ◽  
pp. 14266-14272 ◽  
Author(s):  
M. I. Irshad ◽  
N. M. Mohamed ◽  
M. Z. Abdullah ◽  
M. S. M. Saheed ◽  
A. Mumtaz ◽  
...  
Keyword(s):  
Easy Axis ◽  
Aluminium Oxide ◽  
Deposition Potential ◽  
Crystallographic Structure ◽  
Cobalt Nanowires ◽  
Magnetic Easy Axis

Cobalt nanowires (NWs) have been synthesized by electrodeposition inside the pores of anodized aluminium oxide templates, at different values of applied deposition potential.

Fabrication of L10-PdCoFe nanocrystalline particles with tilted magnetic easy axis

2007 ◽  
Vol 91 (19) ◽  
pp. 193106 ◽  
Author(s):  
András Kovács ◽  
Yoshihiko Hirotsu
Keyword(s):  
Easy Axis ◽  
Nanocrystalline Particles ◽  
Magnetic Easy Axis

scholarly journals Strain-induced perpendicular magnetic anisotropy and Gilbert damping of Tm3Fe5O12 thin films

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Oana Ciubotariu ◽  
Anna Semisalova ◽  
Kilian Lenz ◽  
Manfred Albrecht
Keyword(s):  
Film Thickness ◽  
Magnetic Anisotropy ◽  
Tensile Strain ◽  
Easy Axis ◽  
Perpendicular Magnetic Anisotropy ◽  
Gilbert Damping ◽  
Sample Plane ◽  
Iron Garnets ◽  
Out Of Plane ◽  
Magnetic Easy Axis

AbstractIn the attempt of implementing iron garnets with perpendicular magnetic anisotropy (PMA) in spintronics, the attention turned towards strain-grown iron garnets. One candidate is Tm3Fe5O12 (TmIG) which possesses an out-of-plane magnetic easy axis when grown under tensile strain. In this study, the effect of film thickness on the structural and magnetic properties of TmIG films including magnetic anisotropy, saturation magnetization, and Gilbert damping is investigated. TmIG films with thicknesses between 20 and 300 nm are epitaxially grown by pulsed laser deposition on substituted-Gd3Ga5O12(111) substrates. Structural characterization shows that films thinner than 200 nm show in-plane tensile strain, thus exhibiting PMA due to strain-induced magnetoelastic anisotropy. However, with increasing film thickness a relaxation of the unit cell is observed resulting in the rotation of the magnetic easy axis towards the sample plane due to the dominant shape anisotropy. Furthermore, the Gilbert damping parameter is found to be in the range of 0.02 ± 0.005.

scholarly journals MAPON Spectroscopy and Its Application to Transition Metal Ferromagnets

1998 ◽  
Vol 51 (2) ◽  
pp. 295 ◽  
Author(s):  
W. D. Hutchison ◽  
N. Yazidjoglou ◽  
D. H. Chaplin
Keyword(s):  
Transition Metal ◽  
Hyperfine Interaction ◽  
Frequency Domain ◽  
Electric Quadrupole ◽  
Magnetic Hyperfine ◽  
Adiabatic Passage ◽  
Future Studies ◽  
Radioactive Probe ◽  
Magnetic Hyperfine Interaction ◽  
Quadrupole Interactions

Modulated adiabatic passage on oriented nuclei (MAPON) is a technique developed specifically to measure very small electric quadrupole interactions (EQIs) at radioactive probe nuclei even when such interactions are masked in the frequency domain by inhomogeneous magnetic broadening associated with a dominant magnetic hyperfine interaction. In this paper an overview of the technique is presented with particular reference to 60CoCo EQI measurements which were an important step in establishing MAPON methodology. MAPON results for dilute nd impurities in ferromagnetic Fe and Ni metal hosts are reviewed including presentation of new data for 58CoNi and 60CoNi. Priorities for future studies are provided on the basis of this review.

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