Magnetism in the nitronyl nitroxide isomers 1-NAPNN and 2-NAPNN studied by

Magnetism in the nitronyl nitroxide isomers 1-NAPNN and 2-NAPNN studied by
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研究人员研究了硝基硝基氧异构体 1-NAPNN 和 2-NAPNN 的磁性

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发表时间：
1996
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通讯作者：
W Hayes
W Hayes
中科院分区：
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作者：
S J Blundell;T Sugano;P A Pattenden;F L Pratt;R M Valladares;K H Chow;H Uekusa;Y Ohashi;W Hayes

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本文报道了最近发现的两种硝酰基氮氧化物1-和2-萘基硝酰基氮氧化物（1-NAPNN和2-NAPNN）的μ子自旋旋转/弛豫实验结果。这两种化合物是化学异构体，但由于它们的分子形状略有不同，它们具有完全不同的晶体堆积。在100 mK以下的1-NAPNN中观察到零场μ子自旋弛豫中的明显磁转变，而在2-NAPNN中没有观察到这种转变。这些结果支持了晶体结构强烈影响这些材料中磁基态性质的假设。
We report the results of muon-spin-rotation/relaxation () experiments on two recently discovered nitronyl nitroxides, 1- and 2-naphthyl nitronyl nitroxide (1-NAPNN and 2-NAPNN). These two compounds are chemical isomers but, because of their slightly different molecular shapes, they have quite different crystal packing. A clear magnetic transition in the zero-field muon-spin relaxation is observed in 1-NAPNN below 100 mK while no such transition is seen in 2-NAPNN. These results support the postulate that the crystal structure strongly influences the nature of the magnetic ground states in these materials.