Zero-field muon spin rotation study on genuine organic ferromagnets, 4-arylmethyleneamino-2,2,6,6-tetramethylpiperidin-1-yloxyls (aryl=4-biphenylyl and phenyl)

被引：15

作者：

Ishida, T

Ohira, S

Ise, T

Nakayama, K

Watanabe, I

Nogami, T

Nagamine, K

机构：

[1] Univ Electrocommun, Dept Appl Phys & Chem, Chofu, Tokyo 1828585, Japan

[2] RIKEN, Inst Phys & Chem Res, Muon Sci Lab, Wako, Saitama 3510198, Japan

[3] High Energy Accelerator Res Org, Inst Mat Struct Sci, Meson Sci Lab, Tsukuba, Ibaraki 3050801, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2000年 / 330卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(00)01065-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Long-range magnetic orderings are unequivocally demonstrated by zero-field muon spin rotation/relaxation measurements on the genuine organic free radical crystals of 4-(p-phenylbenzylideneamino)- and 4-(benzylideneamino)-TEMPOs (TEMPO = 2,2,6,6-tetramethylpiperidin-1-yloxyl). The T-C's are 0.22 and 0.17 K and the critical exponents (beta 's) 0.356 and 0.362, respectively. Dominant two-dimensional ferromagnetic interaction is confirmed and inter-sheet dipolar interaction is proposed for bulk ferromagnetism. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

收藏

页码：110 / 117

页数：8

相关论文

共 27 条

[1] OBSERVATION OF A MAGNETIC TRANSITION IN PARA-PYRIDYL NITRONYL NITROXIDE USING ZERO-FIELD MU-SR [J].

BLUNDELL, SJ ;

PATTENDEN, PA ;

VALLADARES, RM ;

PRATT, FL ;

SUGANO, T ;

HAYES, W .

SOLID STATE COMMUNICATIONS, 1994, 92 (07) :569-572

[2] Magnetism in the nitronyl nitroxide isomers 1-NAPNN and 2-NAPNN studied by mu(+)SR [J].

Blundell, SJ ;

Sugano, T ;

Pattenden, PA ;

Pratt, FL ;

Valladares, RM ;

Chow, KH ;

Uekusa, H ;

Ohashi, Y ;

Hayes, W .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1996, 8 (01) :L1-L6

[3] Organic magnetism in nitronyl nitroxides studied by mu SR [J].

Blundell, SJ ;

Pattenden, PA ;

Pratt, FL ;

Chow, KH ;

Hayes, W ;

Sugano, T .

HYPERFINE INTERACTIONS, 1997, 104 (1-4) :251-256

[4] MU(+) SR OF THE ORGANIC FERROMAGNET P-NPNN - DIAMAGNETIC AND PARAMAGNETIC STATES [J].

BLUNDELL, SJ ;

PATTENDEN, PA ;

PRATT, FL ;

VALLADARES, RM ;

SUGANO, T ;

HAYES, W .

EUROPHYSICS LETTERS, 1995, 31 (09) :573-578

[5] Ab initio molecular orbital studies of the positive muon and muonium in 4-arylmethyleneamino-TEMPO derivatives [J].

Briere, TM ;

Jeong, J ;

Das, TP ;

Ohira, S ;

Nagamine, K .

PHYSICA B-CONDENSED MATTER, 2000, 289 :128-131

[6] mu SR of the organic radical ferromagnet, 4-(p-chlorobenzylideneamino)-2,2,6,6-tetramethylpiperidin-1-yloxyl [J].

Imachi, R ;

Ishida, T ;

Nogami, T ;

Ohira, S ;

Nishiyama, K ;

Nagamine, K .

CHEMISTRY LETTERS, 1997, (03) :233-234

[7] AN ORGANIC FERROMAGNET WITH A T-C OF 0.4 K - 4-(P-PHENYLBENZYLIDENEAMINO)-2,2,6,6-TETRAMETHYLPIPERIDIN-1-OXYL [J].

ISHIDA, T ;

TSUBOI, H ;

NOGAMI, T ;

YOSHIKAWA, H ;

YASUI, M ;

IWASAKI, F ;

IWAMURA, H ;

TAKEDA, N ;

ISHIKAWA, M .

CHEMISTRY LETTERS, 1994, (05) :919-922

[8] AN ORGANIC METAMAGNET - 4-(2-NAPHTYLMETHYLENEAMINO)-2,2,6,6-TETRAMETHYLPIPERIDIN-1-OXYL [J].

ISHIDA, T ;

TOMIOKA, K ;

NOGAMI, T ;

YOSHIKAWA, H ;

YASUI, M ;

IWASAKI, F ;

TAKEDA, N ;

ISHIKAWA, M .

CHEMICAL PHYSICS LETTERS, 1995, 247 (1-2) :7-12

[9] TEMPO radicals showing magnetic interactions. I. 4-(4-halobenzylideneamino)TEMPO and related compounds [J].

Iwasaki, F ;

Yoshikawa, JH ;

Yamamoto, H ;

Kan-Nari, E ;

Takada, K ;

Yasui, M ;

Ishida, T ;

Nogami, T .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1999, 55 :231-245

[10] TEMPO radicals showing magnetic interactions. II. 4-(benzylideneamino)-TEMPO and related compounds [J].

Iwasaki, F ;

Yoshikawa, JH ;

Yamamoto, H ;

Takada, K ;

Kan-nari, E ;

Yasui, M ;

Ishida, T ;

Nogami, T .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1999, 55 :1057-1067