Zero-field muon spin rotation study on TEMPO-based magnets, Ar-CH=N-TEMPO

被引：11

作者：

Ishida, T ^{[1
]}

Ohira, S

Watanabe, I

Nogami, T

Nagamine, K

机构：

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

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

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

来源：

POLYHEDRON | 2001年 / 20卷 / 11-14期

关键词：

magnetic phase transition; organic ferromagnet; antiferromagnet; ferromagnetic interaction; free radical;

D O I：

10.1016/S0277-5387(01)00652-0

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Long-range magnetic orderings are demonstrated by zero-field muon spin rotation/relaxation measurements on the genuine organic Free radical crystals, 4-(p-chlorobenzylideneamino)-, 4-(p-phenylbenzylideneamino)-, and 4-(benzylideneamino)-TEMPOs (TEMPO = 2,7,6,6-tetramethylpiperidin-1-yloxyl) with T-C values of 0.28, 0.22, and 0.17 K, respectively, and 4-(4-pyridylmethyleneamino)-TEMPO with T-N of approximate to0.07 K. From comparison between the crystal structures and internal fields at the muon sites, dominant two-dimensional ferromagnetic interaction is confirmed and inter-sheet dipolar interaction is proposed for bulk magnetism. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：1545 / 1549

页数：5

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