Record hard magnets: Glauber dynamics are key

被引：58

作者：

Sessoli, Roberta ^{[1
,2
]}

机构：

[1] Univ Florence, Dept Chem, I-50019 Sesto Fiorentino, Italy

[2] Univ Florence, INSTM UdR Firenze, I-50019 Sesto Fiorentino, Italy

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2008年 / 47卷 / 30期

关键词：

chain compounds; cobalt; hysteresis; magnetic properties; radicals;

D O I：

10.1002/anie.200801549

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A molecular magnet comprising cobalt(II) ions and nitronyl-nitroxide radicals has a large coercivity at low temperature that makes it comparable to the hardest commercial alloy-based magnets. The one-dimensional character of the material, with very strong and anisotropic exchange interactions along the chains, seems responsible for the dramatic slowing of the magnetization dynamics. (Figure Presented). © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：5508 / 5510

页数：3

共 19 条

[1] The canted antiferromagnetic approach to single-chain magnets [J].

Bernot, Kevin ;

Luzon, Javier ;

Sessoli, Roberta ;

Vindigni, Alessandro ;

Thion, Julien ;

Richeter, Sebastien ;

Leclercq, Dominique ;

Larionova, Joulia ;

van der Lee, Arie .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (05) :1619-1627

[2]

Caneschi A, 2002, CHEM-EUR J, V8, P286, DOI 10.1002/1521-3765(20020104)8:1<286::AID-CHEM286>3.0.CO

[3]

2-D

[4]

Caneschi A, 2001, ANGEW CHEM INT EDIT, V40, P1760, DOI 10.1002/1521-3773(20010504)40:9<1760::AID-ANIE17600>3.0.CO

[5]

2-U

[6]

Caneschi A., 2001, ANGEW CHEM, V113, P1810

[7] Evidence for single-chain magnet behavior in a MnIII-NiII chain designed with high spin magnetic units:: A route to high temperature metastable magnets [J].

Clérac, R ;

Miyasaka, H ;

Yamashita, M ;

Coulon, C .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (43) :12837-12844

[8] Single-chain magnets:: Theoretical approach and experimental systems [J].

Coulon, Claude ;

Miyasaka, Hitoshi ;

Clerac, Rodolphe .

SINGLE-MOLECULE MAGNETS AND RELATED PHENOMENA, 2006, 122 :163-206

[9] TEMPERATURE-DEPENDENCE OF COERCIVITY OF CELLULAR SM2CO17-SMCO5 PERMANENT-MAGNETS [J].

DURST, KD ;

KRONMULLER, H ;

PARKER, FT ;

OESTERREICHER, H .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1986, 95 (01) :213-219

[10] Single-molecule magnets: Characterization of complexes exhibiting out-of-phase AC susceptibility signals. [J].

Eppley, HJ ;

Aubin, SMJ ;

Wemple, MW ;

Adams, DM ;

Tsai, HL ;

Grillo, VA ;

Castro, SL ;

Sun, ZM ;

Folting, K ;

Huffman, JC ;

Hendrickson, DN ;

Christou, G .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1997, 305 :167-179

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