Electron paramagnetic resonance linewidth narrowing of Gd~(3+)in Y-doped ceria nanocrystals with decreasing crystallite size

R. M. Rakhmatullin; L.K. Aminov; I. N. Kurkin; R. Bottcher; A. Poppl; H. Avila-Paredes; S. Kim; S. Sen

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Electron paramagnetic resonance linewidth narrowing of Gd~(3+)in Y-doped ceria nanocrystals with decreasing crystallite size

机译：Y掺杂二氧化铈纳米晶体中Gd〜（3+）的电子顺磁共振线宽变窄

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Electron paramagnetic resonance (EPR) spectra of Gd~(3+)ions in crystallineCe_(1-x-y)Gd_xY_yO2-[0.5*(x+y)](x=0.0025,y=0.10,and 0.25) with crystallite sizes ranging from 600 nmdown to 5 nm have been measured at X-band and at Q-band near liquid He and room temperatures.The EPR line shape is controlled by the low-symmetry surrounding of Gd~(3+)ions in a coordinationenvironment with one oxygen-vacancy and seven oxygen nearest-neighbors forming GdO_7polyhedra. These coordination polyhedra are characterized by a wide distribution of crystal fieldparameters that primarily controls the EPR linewidth. The EPR linewidth of the central + transition is observed to decrease systematically with decreasing crystallite size. Thisobservation implies that the size of the crystallites in the nanoregime may have important influenceon the energetics of vacancy distribution in crystalline materials.

机译：晶体尺寸为范围从在液氦和室温附近的X波段和Q波段测量了从600 nm到5 nm的范围。EPR线的形状由在一个氧配位环境中Gd〜（3+）离子的低对称性包围来控制空位和七个氧最近邻域形成GdO_7polyhedra。这些配位多面体的特征在于主要控制EPR线宽的晶体场参数分布广泛。观察到中心+跃迁的EPR线宽随着微晶尺寸的减小而系统地减小。该观察表明，纳米区域中的微晶尺寸可能对晶体材料中空位分布的能量有重要影响。

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来源
《The Journal of Chemical Physics》 |2009年第12期|共6页
作者
R. M. Rakhmatullin; L.K. Aminov; I. N. Kurkin; R. Bottcher; A. Poppl; H. Avila-Paredes; S. Kim; S. Sen;
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正文语种 eng
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paramagnetic resonance; narrowing; crystallite;

机译：顺磁共振;变窄;微晶;

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1. Electron paramagnetic resonance linewidth narrowing of Gd~(3+)in Y-doped ceria nanocrystals with decreasing crystallite size [J] . R. M. Rakhmatullin, L.K. Aminov, I. N. Kurkin, The Journal of Chemical Physics . 2009,第12期

机译：Y掺杂二氧化铈纳米晶体中Gd〜（3+）的电子顺磁共振线宽变窄
2. Electron Paramagnetic Resonance of Gd3+ Ions in Powders of LaF_3:Gd~(3+) Nanocrystals [J] . A. M. Gazizulina, E. M. Alakshin, E. I. Baibekov, JETP Letters . 2014,第3期

机译：LaF_3：Gd〜（3+）纳米晶体粉末中Gd3 +离子的电子顺磁共振
3. Effect of crystallite size on electron spin resonance of Gd~(3+) and luminescence of Eu~(3+) doped in [J] . V Rama Devi, B Vijaya Kumar, Radha Velchuri Indian journal of engineering and materials sciences . 2012,第3期

机译：晶粒尺寸对Gd〜（3+）电子自旋共振和Eu〜（3+）掺杂的影响。
4. Structural and electron paramagnetic resonance of Fe~(3+)Sm~(3+) co-doped BaTiO_3 [C] . K. Madhan, R. Murugaraj DAE Solid State Physics Symposium . 2020

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5. Electron paramagnetic resonance study of gadolinium(3+) in single crystals of yttrium vanadate [D] . Zhao, Xinghai 2003

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6. Direct observation of narrow mid-infrared plasmon linewidths of single metal oxide nanocrystals [O] . Robert W. Johns, Hans A. Bechtel, Evan L. Runnerstrom, -1

机译：直接观察单个金属氧化物纳米晶体的窄中红外等离激元线宽
7. Double‐Arm Lanthanide Tags Deliver Narrow Gd 3+ –Gd 3+ Distance Distributions in Double Electron–Electron Resonance (DEER) Measurements [O] . Adarshi P. Welegedara, Yin Yang, Michael D. Lee, 2017

机译：双臂镧系元素标签在双电子 - 电子谐振（鹿）测量中提供窄GD 3+ -GD 3+距离分布
8. Electron-Paramagnetic-Resonance Spectra of Nd(3+),Dy(3+),Er(3+),and Yb(3+) in Lithium Yttrium Flouride, [R] . sattler,joseph p. nemarich,joseph 1971

机译：钇锂钇中Nd（3 +），Dy（3 +），Er（3 +）和Yb（3+）的电子顺磁共振谱，

Electron paramagnetic resonance linewidth narrowing of Gd~(3+)in Y-doped ceria nanocrystals with decreasing crystallite size

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