- Cross correlation rates between Curie spin and... - PubMed.
- Cross-Correlation Effects Involving Curie Spin Relaxation in.
- Cross Correlation between the Dipole-Dipole Interaction and the Curie.
- Spin relaxation in diluted magnetic semiconductors: GaMnAs as... - PubMed.
- Practical Aspects of 1H Transverse Paramagnetic Relaxation Enhancement.
- Spin–spin relaxation - Wikipedia.
- Molecular factors that determine Curie spin relaxation in.
- CiteSeerX — Citation Query Spin-lattice relaxation time of.
- Spin Relaxation - an overview | ScienceDirect Topics.
- Cross Correlation between the Dipole–Dipole Interaction and.
- Modulation of the distance dependence of paramagnetic relaxation.
- Angular dependence of dipole-dipole-Curie-spin cross-correlation.
- Nuclear relaxation in macromolecules by paramagnetic... - ScienceDirect.
- Spin relaxation in diluted magnetic semiconductors:.
Cross correlation rates between Curie spin and... - PubMed.
When PREs due to Curie-spin relaxation are cross-correlated with CSA relaxation, the CSA tensor is added to the dipolar shielding tensor to give an effective shielding tensor σ eff. The PRE including CSA cross-correlation R Curie × CSA is determined as the difference in relaxation rates in the paramagnetic and diamagnetic state as shown in Eq. Alternatively restrict CR-dependent relaxation acceleration to the transverse plane whenever a T 2-selective CR (T 2-CR) is desired. The “Curie-spin” (CS), or “molecular susceptibility,” mechanism underlies this Dy-CR property, having little or no effect on longitudinal 1H 2O relaxation, depending on the B 0 and τ m values. The Solomon.
Cross-Correlation Effects Involving Curie Spin Relaxation in.
The electronic spin-spin relaxation time, T2, is calculated for Heisenberg ferromagnets in the region immediately above the Curie point. The calculation, which pertains to zero field, predicts that 1/T2diverges as χT3/4where χTis the isothermal susceptibility.
Cross Correlation between the Dipole-Dipole Interaction and the Curie.
Results: NMR measurements demonstrated that Curie spin relaxation is the dominant contribution (> 90%) to the observed transverse relaxation rate of paramagnetic liposomes. This was further confirmed by MRI that showed the ability of the liposome entrapped lanthanide complexes to generate IRON-MRI positive contrast in a size dependent manner. Spin-lattice relaxation time of ferromagnetic gadolinium determined with time-resolved spin-polarized photoemission (1991) by A Vaterlaus, T Beutler, F Meier Venue:... where the ratio of the Curie temperature to the atomic magnetic moment turns out to have a crucial role. We conclude that the ultrafast magnetization dynamics can be well.
Spin relaxation in diluted magnetic semiconductors: GaMnAs as... - PubMed.
The spin relaxation is caused by the spin–orbit and the spin–spin interactions. Both of these parameters may depend on the temperature, the. The 15N-HSQC spectra of low-spin cyano-met-myoglobin and high-spin fluoro-met-myoglobin were assigned and dipole-dipole-Curie-spin cross-correlated relaxation rates measured. These cross-correlation rates originating from the dipolar 1H-15N interaction and the dipolar interaction between the 1H and the Curie spin of the paramagnetic center contain long-range angular information about the.
Practical Aspects of 1H Transverse Paramagnetic Relaxation Enhancement.
Abstract. A theoretical study is made on the nuclear spin relaxation in magnetic crystals near their Curie temperatures. The exchange narrowed hyperfine broadening of the NMR line width is shown to increase due to the slowing down of a certain part of the electron spin fluctuations as the transition point is approached, giving rise to the line width whose asymptotic value near the transition. We assess the potential of obtaining structural constraints from the cross-correlation of Curie spin relaxation with dipolar relaxation mechanisms among methyl proton spins. By theoretical analysis and numerical simulations we characterize the transfer functions describing the interconversion processes of different ranks of multispin order.
Spin–spin relaxation - Wikipedia.
We report results of magnetization, specific heat, and muon spin relaxation (μ SR) measurements on single crystals of disorder-free Yb 3 + triangular lattice Yb (BaBO 3) 3.The magnetization experiments show anisotropic magnetic properties with Curie-Weiss temperatures θ ⊥ = − 1.40 K (H ⊥ c) and θ ∥ = − 1.16 K (H ∥ c) determined from low-temperature data.
Molecular factors that determine Curie spin relaxation in.
Curie spin relaxation - Wakelet Roxanne @Roxanne62 1 item Curie spin relaxation The nano-size effects of high-Tc cuprate superconductor La2−xSrxCuO4 with x = 0.20 are investigated using X-ray diffractometry, Transmission electron m No items have been added yet!. This new equipment allows students to perform experiments that naturally lead them to an understanding of precession, Curie's Law of paramagnetism, spin-lattice relaxation and even spin-spin coupling. The apparatus lends itself to inquiry based explorations. Its adjustable variables and magnetic resonance signals are all on a human scale. Curie Spin Relaxation (CSR) CSR in the interaction between the nuclear spin and the static magnetic moment <S z> (the time-averaged electron spin moment) This interaction cannot be modulated by the electron spin relaxation, since <S z> is already an average over the electron spin states The correlation time for this coupling is only determined.
CiteSeerX — Citation Query Spin-lattice relaxation time of.
Dysprosium complexes can serve as transverse relaxation (T 2) agents for water protons through chemical exchange and the Curie spin relaxation mechanism.Using a pair of matched dysprosium(III) complexes, Dy-L1 (contains one inner-sphere water) and Dy-L2 (no inner-sphere water), it is shown that the transverse relaxation of bulk water is predominantly an innersphere effect. Molecular factors that determine Curie spin relaxation in dysprosium complexes Dysprosium complexes can serve as transverse relaxation (T(2)) agents for water protons through chemical exchange and the Curie spin relaxation mechanism. Thus, the electron relaxation time τ s is calculated to be 9.6 ns. For this system, Eqs. 3 and 10 predict that the contribution of the Curie-spin relaxation mechanism to the overall Γ 2 at 308 K is only 2%, even at a 1 H-frequency of 800 MHz. The relative contribution of the Curie-spin relaxation depends on the size of the system.
Spin Relaxation - an overview | ScienceDirect Topics.
PDF | A quantum spin liquid (QSL) is an exotic state in which electron spins are highly entangled, yet keep fluctuating even at zero temperature.... | Find, read and cite all the research you need.
Cross Correlation between the Dipole–Dipole Interaction and.
We assess the potential of obtaining structural constraints from the cross-correlation of Curie spin relaxation with dipolar relaxation mechanisms among methyl proton spins. By theoretical analysis and numerical simulations we characterize the transfer functions describing the interconversion processes of different ranks of multispin order.
Modulation of the distance dependence of paramagnetic relaxation.
Cross correlation rates between Curie spin relaxation and H-N dipole-dipole coupling (Γ CS,DD HM,HN) have been determined for a calcium binding protein, Calbindin D 9k, in which one of the two calcium ions is substituted with cerium(III).Γ CS,DD HM,HN values depend on both the metal-to-proton distances and the M-H-N angles and can be used as an additional constraint in order to refine the. Comparison of the experimental data with predictions from crystal structure data showed that the anisotropy of the magnetic susceptibility tensor in low spin cyano-met-myoglobin significantly influences the cross-correlated dipole-dipole-Curie-spin relaxation rates. PMID: 12913408 [Indexed for MEDLINE] Publication Types.
Angular dependence of dipole-dipole-Curie-spin cross-correlation.
Magnetic susceptibility can be described by the Curie-Weiss function ,... Shiga T. Electron spin relaxation of synthetic melanin and melanin-containing human tissues as studied by electron spin echo and electron spin resonance. Arch. Biochem. Biophys. 1985, 242, 197-205. 10.1016/0003-9861(85)90493-x. Cross-correlated relaxation caused by the interference of nuclear dipole–dipole interaction and the Curie spin relaxation (DD–CSR cross relaxation) is…. The (15)N-HSQC spectra of low-spin cyano-met-myoglobin and high-spin fluoro-met-myoglobin were assigned and dipole-dipole-Curie-spin cross-correlated relaxation rates measured.
Nuclear relaxation in macromolecules by paramagnetic... - ScienceDirect.
The magnetic dipolar interaction of a nuclear spin with the thermal average of an electronic spin ("Curie spin") is modulated by molecular motion but not by the electronic spin relaxation. In. Abstract Cross correlation rates between Curie spin relaxation and H-N dipole-dipole coupling (gamma (HM,HN)CS,DD) have been determined for a calcium binding protein, Calbindin D9k, in which one of the two calcium ions is substituted with cerium (III). University of Wisconsin–Madison Abstract The electronic spin-spin relaxation time, T~, is calculated for Heisenberg ferromagnets in the region immediately above the Curie point. The calculation,.
Spin relaxation in diluted magnetic semiconductors:.
This contribution is about 25% and 50% in the spin-spin relaxation rates at the magnetic field of 1.5 T during the latent and ending stages of the aggregation process, respectively. At lower. Dysprosium complexes can serve as transverse relaxation (T2) agents for water protons through chemical exchange and the Curie spin relaxation mechanism. Using a pair of matched dysprosium(III) complexes, Dy‐L1 (contains one inner‐sphere water) and Dy‐L2 (no inner‐sphere water), it is shown that the transverse relaxation of bulk water is predominantly an inner‐sphere effect. The.
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