Syntheses of New Verdazyl Radicals and Mechanism of Appearance of Genuine Organic Ferromagnetism and Weak Ferromagnetism

在本工作中，我们已经合成了大约50种新的有机绿豆根基晶体。从磁化率、交流磁化率、热容、ESR和X射线分析的结果中，我们成功地获得了以下具有有趣磁性的化合物：1)三种新的有机铁磁(p-CDTV、p-CDpOV和p-MeDpOV)的发现和铁磁性的出现机理；2)两种新的有机弱铁磁(ToV和p-CyDpTV)的发现。3)非磁性杂质对弱铁磁的掺杂效应。4)两种新的有机反铁磁体(p-NTV和p-BDpTV)的发现。5)新的自旋-Peierls过渡化合物(p-CyDOV)的发现及其磁相图的研究。6)磁性和非磁性杂质对p-CyDOV自由基晶体自旋-Peierls转变的掺杂效应的研究。7)新的杂环化合物的发现。9)磁性杂质对准一维海森堡有机铁磁材料(p-CDpOV)和反铁磁体(p-BDpOV)的掺杂效应的研究。

In the present work, about 50 kinds of new organic verdazyl radical crystals have been prepared. From the results of the measurements of magnetic susceptibility, ac magnetic susceptibility, heat capacity arid ESR and the X-ray analyses, we have succeeded in obtaining the following compounds having interesting magnetic properties.1) Finding of three kinds of new organic ferromagnet (p-CDTV, p-CDpOV and p-MeDpOV) and the mechanism of appearance of ferromagnetism.2) Finding of two kinds of new organic weak ferromagnet (TOV and p-CyDpTV).3) Doping effect of nonmagnetic impurities on weak ferromagnet, TOV.4) Finding of two kinds of new organic antiferromagnet (p-NTV and p-BDpTV).5) Finding of a new spin-Peierls transition compound (p-CyDOV) and study of its magnetic phase diagram.6) The study of doping effect of magnetic and nonmagnetic impurities on the spin-Peierls transition of p-CyDOV radical crystal.7) Finding of a new verdazyl spin frustration compound, p-FPDV.8) Magnetism of molecular complexes between verdazyl radical and electron acceptor (TCNQ and TCNQF_4).9) The study of doping effect of magnetic impurities on quasi-one dimensional Heisenberg organic ferromagnet (p-CDpOV) and antiferromagnet (p-BDpOV).