Magnetic Phase Transition of Organic Free Radical p-Cl-BDPA
作者： Jun Yamauchi , Kimio Adachi , Yasuo Deguchi
DOI: 10.1143/JPSJ.35.443
关键词:
摘要: The heat capacity of polycrystalline organic free radical, p -Cl-BDPA, has been measured between 1.5 and 20 K. broad maximum near 5 K in the magnetic corresponds short range ordering unpaired electron. At 3.25 a sharp peak was observed, which indicates paramagnetic-antiferromagnetic phase transition. entropy this transition yields 101.5% expected Rln2. Below T N good agreement with three-dimensional spin wave theory antiferromagnet.
jps.jp
harvard.edu
sci-hub.se 参考文章(18)
Joseph F. Deck, Magnetic and Thermal Studies ofDi−p−Anisylnitrosyl Physical Review. ,vol. 183, pp. 567- 572 ,(1969) , 10.1103/PHYSREV.183.567
Henri Lemaire, Paul Rey, André Rassat, André de Combarieu, Jean-Claude Michel, Nitroxydes XXVII. Chaleur spécifique du tétra-méthyl-2,2,6,6 pipéridinol-4 oxyle-1 entre 1,3°K et 74°K Molecular Physics. ,vol. 14, pp. 201- 208 ,(1968) , 10.1080/00268976800100221
Donald E. Williams, Structure of 3,4-dihydro-2,4,6-triphenyl-s-tetrazin-1(2H)-yl free radical by crystal-packing analysis and x-ray diffraction Journal of the American Chemical Society. ,vol. 91, pp. 1243- 1245 ,(1969) , 10.1021/JA01033A052
H. E. Stanley, T. A. Kaplan, Possibility of a Phase Transition for the Two-Dimensional Heisenberg Model Physical Review Letters. ,vol. 17, pp. 913- 915 ,(1966) , 10.1103/PHYSREVLETT.17.913
Ryogo Kubo, The Spin-Wave Theory of Antiferromagnetics Physical Review. ,vol. 87, pp. 568- 580 ,(1952) , 10.1103/PHYSREV.87.568
Kazuyoshi Takeda, Motohiro Matsuura, Taiichiro Haseda, Magnetic Phase Transition for Dilute Heisenberg Spin System in Two-Dimensional Lattice Journal of the Physical Society of Japan. ,vol. 28, pp. 29- 35 ,(1970) , 10.1143/JPSJ.28.29
Jun Yamauchi, Linear Antiferromagnetic Interaction in Organic Free Radicals Bulletin of the Chemical Society of Japan. ,vol. 44, pp. 2301- 2308 ,(1971) , 10.14989/DOCTOR.R1878
William Duffy, John F. Dubach, Piero A. Pianetta, Joseph F. Deck, Donald L. Strandburg, Andries R. Miedema, Antiferromagnetic Linear Chains in the Crystalline Free Radical BDPA The Journal of Chemical Physics. ,vol. 56, pp. 2555- 2561 ,(1972) , 10.1063/1.1677580
Osamu Takizawa, Jun Yamauchi, Hiroaki Ohya-Nishiguchi, Yasuo Deguchi, Magnetic Properties of Organic Stable Radicals. III. Diphenyl Nitric Oxide Bulletin of the Chemical Society of Japan. ,vol. 44, pp. 3188- 3188 ,(1971) , 10.1246/BCSJ.44.3188
Richard Kuhn, Alfred Neugebauer, Über substituierte Bis-biphenylen-allyl-Radikale Monatshefte Fur Chemie. ,vol. 95, pp. 3- 23 ,(1964) , 10.1007/BF00909246