Spin Quenching and Magnetic Resonance

概要

論文の詳細を見る
The effect of the magnetic ions of those paramagnetic salts whose spin degeneracy is completely lifted by the combined action of the spin-orbit coupling and the crystalline electric field, on the magnetic resonance of nuclear spins and electronic spins of other kind of ions such as Cu^<2+>, Co^<2+>, Mn^<2+> substituted for the host ions are studied theoretically. General formulas for the resonance field shift, line width and the thermal relaxation time in nuclear (or electron) spin resonance in magnetic substances are given. T_1 and T_2 are here related to the difference between isothermal and isolated susceptibilities. Temperature dependence of T_1 and T_2 as well as magnetic field dependence of them are studied. At low temperatures they become longer rapidly (exponentially) as temperature is lowered while at high temperatures they are independent of temperature. Field dependence of the line width is of the type of H_0^2 + H_i^2 when the line is narrowed by spin-spin interaction among the host ion spins, or √<H_0^2 + H_i^2> when the line is not narrowed, where H_i denotes the local magnetic field. Field dependence of 1/T_1 is always like H_0^2 + H_i^2. The theoretical results are compared with some available experimental data on electron spin resonance. The agreement between theory and experiment seems to be not unreasonable as far as order of magnitude and qualitative characters of the line width are concerned, though experimental data are now rather scanty.
社団法人日本物理学会の論文
1958-11-05

Spin Quenching and Magnetic Resonance

スポンサーリンク

概要

著者

関連論文

スポンサーリンク