adsorptionsilica gelH 2OThe paper deals with the study of the spectra of the electron paramagnetic resonance (EPR) of the Mn 2+ ions adsorbed on the silica gel. Further on there have been studied the changes in the EPR spectrum of the Mn 2+ ions adsorbed on the silica gel that are ...
它们可以是基态(三线态氧)或者激发态(单线态氧)。 ● 过渡金属离子和稀土离子:这类分子在原子轨道中出现未成对电子,如Ti3+ (3d1 ) ,V4+ (3d1 ) ,Mn2+(3d5 ) ,Fe2+ (3d6 )和Cu2+ (3d9 )等。 ● 固体中的晶格缺陷:一个或多个电子或空穴陷落在缺陷...
玉石中的致色元素可以通过EPR进行研究,在于海燕等人研究中,通过电子顺磁共振波谱检测 Mn2+、Fe3+、Cr3+ 和Ti3+能谱,探究青海软玉Mn2+、Fe3+和 Cr3+ 的价态及占位情况,由于晶体场使Fe2+ 离子自旋态的分裂太大和自旋 -晶格驰豫时间太短,因此在室温和液氮温度下观察不到Fe2+的EPR吸收谱。发现青海软玉的致色主要...
EPR Study of Mn2+ Doped Single Crystal of α-Ca(HCOO)2First page of articledoi:10.1002/pssb.2221450146M. UmarM. I. HaqueR. J. SinghJohn Wiley & Sons, Ltd.physica status solidi (b)
Electron paramagnetic resonance studies of Mn2+ in zinc fluotitanate hexahydrate (ZnTiF6·6H2O) have been made between 77 and 300 K, in the X-band frequency range. At 173±2 K a structural phase transition was observed. The axial symmetry at room temperature with a single magnetic site was...
Bi4Ge012:Mn2+晶体的EPR谱和发光谱的理论研究 四川师范大学固体物理研究所胡萍黄平谢林华 【摘要】在本文中,我们在强场图像下应用精确的完全对角化的方法,以及赵提出的近似等 效的SEMI-SCF d轨函理论。计算了掺有Mn2+的Bi4GeOl2晶体的吸收光。理论值 与实验值符合得很好,在计算中,我们获得了掺杂离子Mn2+的局...
EPR studies of Mn2+ in the Loess Plateau of central China: Implication for variation of the East Asia summer monsoon 来自 Semantic Scholar 喜欢 0 阅读量: 60 作者:J Chen,J Ji,Y Su,H Lu 摘要: Mn 2+ EPR intensity recorded in the Chinese loess_paleosol sequence shows close correlation with...
The photoluminescence intensity at 580 nm for 2–3 nm ZnS doped with Mn2+ (ZnS:Mn) increases after modification by acrylic acid (AA). Mn2+ electronic states are examined by electron paramagnetic resonance (EPR) spectroscopy. Signal I with g=2.0024 and hyperfine coupling constant |A|=6.9mT an...
EPR and optical study of Mn2+-doped bis(l-Asparaginato)Zn(II)EPR and optical study of Mn2+-doped bis(l-Asparaginato)Zn(II)Experimental/ crystal field interactionscrystal structuremanganeseorganic compoundsparamagnetic resonancespin Hamiltonians/ EPR spectraspin-Hamiltonian parameterszero...
The observed spectrum is a single broad peak due to dipolar coupling between Mn2+ ions with g = 3.849. Acquiring the spectrum at 355 MHz means recording the B0 field from 0 to 38 mT, and over this range the total Rhodochrosite linewidth is only partially captured. The spectrum is ...