Nontrivial Spin Dimer in the Hexagonal Ruthenate Ba3CaRu2O9 Revealed by Nonmagnetic Ion Substitution

2021 ◽  
Vol 90 (11) ◽  
Author(s):  
Daiki Nishihara ◽  
Akinori Kimura ◽  
Akitoshi Nakano ◽  
Hiroki Taniguchi ◽  
Ichiro Terasaki
Keyword(s):  
Spin Dimer ◽  
Ion Substitution

Tailoring the hyperthermia potential of magnetite nanoparticles via gadolinium ION substitution

2021 ◽  
Author(s):  
V. Janani ◽  
S. Induja ◽  
D. Jaison ◽  
E. Meher Abhinav ◽  
M. Mothilal ◽  
...  
Keyword(s):  
Magnetite Nanoparticles ◽  
Ion Substitution

Improvement of Ferroelectric Properties of Lead Zirconate Titanate Thin Films by Ion-substitution using Rare-earth Cations

2004 ◽  
Vol 830 ◽  
Author(s):  
Hiroshi Nakaki ◽  
Hiroshi Uchida ◽  
Shoji Okamoto ◽  
Shintaro Yokoyama ◽  
Hiroshi Funakubo ◽  
...  
Keyword(s):  
Thin Films ◽  
Rare Earth ◽  
Lead Zirconate Titanate ◽  
Ferroelectric Property ◽  
Ferroelectric Properties ◽  
Lead Zirconate ◽  
Crystal Anisotropy ◽  
Pzt Film ◽  
Zirconate Titanate ◽  
Ion Substitution

ABSTRACTRare-earth-substituted tetragonal lead zirconate titanate thin films were synthesized for improving the ferroelectric property of conventional lead zirconate titanate. Thin films of Pb1.00REx (Zr0.40Ti0.60)1-(3x /4)O3 (x = 0.02, RE = Y, Dy, Er and Yb) were deposited on (111)Pt/Ti/SiO2/(100)Si substrates by a chemical solution deposition (CSD). B-site substitution using rare-earth cations described above enhanced the crystal anisotropy, i.e., ratio of PZT lattice parameters c/a. Remanent polarization (Pr) of PZT film was enhanced by Y3+-, Dy3+- and Er3+-substitution from 20 μC/cm2 up to 26, 25 and 26 μC/cm2 respectively, while ion substitution using Yb3+ degraded the Pr value down to 16 μC/cm2. These films had similar coercive fields (Ec) of around 100 kV/cm. Improving the ferroelectric property of PZT film by rare-earth-substitution would be ascribed to the enhancement of the crystal anisotropy. We concluded that ion substitution using some rare-earth cations, such as Y3+, Dy3+ or Er3+, is one of promising technique for improving the ferroelectric property of PZT film.

scholarly journals Crystal Growth with Oxygen Partial Pressure of the BaCuSi2O6 and Ba1–xSrxCuSi2O6 Spin Dimer Compounds

2016 ◽  
Vol 16 (6) ◽  
pp. 3416-3424 ◽  
Author(s):  
Natalija van Well ◽  
Pascal Puphal ◽  
Björn Wehinger ◽  
Mariusz Kubus ◽  
Jürg Schefer ◽  
...  
Keyword(s):  
Crystal Growth ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Spin Dimer

Quantum Phase Transition in Spin Dimer Systems

2021 ◽  
Vol 1 ◽  
Keyword(s):  
Phase Transition ◽  
Neutron Scattering ◽  
Quantum Phase Transition ◽  
Magnetic Moment ◽  
Conservation Law ◽  
Quantum Phase ◽  
Total Moment ◽  
Sum Rule ◽  
Spin Dimer

A magnetic moment fluctuates in both longitudinal and transverse directions. The total moment sum rule is a conservation law that can help us resolve data of neutron scattering into the two components.

Depolarizing actions of GABA and glycine on amphibian retinal horizontal cells

1991 ◽  
Vol 65 (3) ◽  
pp. 680-692 ◽  
Author(s):  
R. A. Stockton ◽  
M. M. Slaughter
Keyword(s):  
Gabaa Receptor ◽  
Gaba Receptors ◽  
Ganglion Cells ◽  
Light Response ◽  
Feedback System ◽  
Horizontal Cells ◽  
Gaba Uptake ◽  
Gamma Aminobutyric Acid ◽  
Ion Substitution ◽  
Chemical Coupling

1. The effects of inhibitory amino acid transmitters on horizontal cells in the superfused amphibian retina were studied by the use of conventional intracellular recording techniques. 2. Gamma-aminobutyric acid (GABA) caused a calcium-independent depolarization of horizontal cells in mud puppy and tiger salamander. This action was mimicked by muscimol but not baclofen (BAC) and blocked by bicuculline and picrotoxin (PTX), matching the GABAa receptor profile. 3. The purported GABA uptake inhibitors nipecotate (NPA) and guvacine (GUV) acted as GABAa agonists, having pharmacological properties very similar to GABA itself. These agents also activated receptors of amacrine and ganglion cells, causing membrane polarizations similar to GABA. Concentrations of these analogues that did not activate the GABAa receptor (submillimolar) did not lower the effective dose of GABA, even after prolonged application. 4. Glycine (GLY) also depolarized horizontal cells, but only in approximately 25% of the horizontal cells was the amplitude of the depolarization as great as GABA. The glycine response was blocked by both strychnine (STR, 10 microM) and PTX (100 microM). In contrast, the action of GABA was unaffected by STR. 5. Ion substitution and channel-blocking agents indicated that the effects of applied GABA and GLY were independent of both external sodium and calcium. 6. The results suggest that GABA receptors on horizontal cells may act 1) as a positive feedback system to modulate the light response and 2) as a mechanism for chemical coupling between horizontal cells.

scholarly journals Spin-dimer networks: engineering tools to adjust the magnetic interactions in biradicals

2017 ◽  
Vol 5 (35) ◽  
pp. 9053-9065 ◽  
Author(s):  
Yulia B. Borozdina ◽  
Evgeny A. Mostovich ◽  
Pham Thanh Cong ◽  
Lars Postulka ◽  
Bernd Wolf ◽  
...  
Keyword(s):  
Magnetic Interactions ◽  
Nitronyl Nitroxide ◽  
Coupled Models ◽  
Spin Dimer ◽  
Imino Nitroxide

Magneto-structural correlations in stable organic biradicals have been studied on example of weakly exchange coupled models with nitronyl nitroxide and imino nitroxide spin-carrying entities.

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