FERROMAGNETIC TDAE-C-60 VERSUS PARAMAGNETIC TDAE-C-70 - FARADAY BALANCE AND ESR STUDY

被引：7

作者：

TANAKA, K

ZAKHIDOV, AA

YOSHIZAWA, K

OKAHARA, K

YAMABE, T

YAKUSHI, K

KIKUCHI, K

SUZUKI, S

IKEMOTO, I

ACHIBA, Y

机构：

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 1992年 / 6卷 / 23-24期

关键词：

D O I：

10.1142/S0217979292002061

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Magnetic properties of C60 and C70 complexes with tetrakis(dimethylamino)ethylene (TDAE) have been studied based on the measurements of the Faraday-balance magnetization and the electron spin resonance (ESR). It has been found that both TDAE-C60 and TDAE-C70 possess about one radical spin per fullerene molecule. TDAE-C60 has been confirmed to show ferromagnetic-type transition at T(c) = 16.7-17.5K. Appearance of a new broad and intense ESR signal below T(c) of TDAE-C60 suggests that the radical spins in the magnetically ordered state rather localize on each C60 molecule and are ferromagnetically correlated. On the other hand, TDAE-C70 does not show ferromagnetism in all the temperature range down to 4.5K.

引用

页码：3953 / 3958

页数：6