Magnetic ordering in an organic polymer

Andrzej Rajca, J. Wongsriratanakul, Suchada Rajca

Research output: Contribution to journalArticle

294 Citations (Scopus)

Abstract

We describe preparation and magnetic properties of an organic π-conjugated polymer with very large magnetic moment and magnetic order at low temperatures. The polymer is designed with a large density of cross-links and alternating connectivity of radical modules with unequal spin quantum numbers (S), macrocyclic S = Z and, cross-linking S = 1/2 modules, which permits large net S values for either ferromagnetic or antiferromagnetic exchange couplings between the modules. In the highly cross-linked polymer, an effective magnetic moment corresponding to an average S of about 5000 and slow reorientation of the magnetization by a small magnetic field (less than or equal to 1 oersted) below a temperature of about 10 kelvin are found. Qualitatively, this magnetic behavior is comparable to that of insulating spin glasses and blocked superparamagnets.

Original languageEnglish (US)
Pages (from-to)1503-1505
Number of pages3
JournalScience
Volume294
Issue number5546
DOIs
StatePublished - Nov 16 2001

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Polymers
Temperature
Magnetic Fields
Glass

ASJC Scopus subject areas

  • General

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Magnetic ordering in an organic polymer. / Rajca, Andrzej; Wongsriratanakul, J.; Rajca, Suchada.

In: Science, Vol. 294, No. 5546, 16.11.2001, p. 1503-1505.

Research output: Contribution to journalArticle

Rajca, Andrzej ; Wongsriratanakul, J. ; Rajca, Suchada. / Magnetic ordering in an organic polymer. In: Science. 2001 ; Vol. 294, No. 5546. pp. 1503-1505.
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