Weak suppression of ferromagnetism in tetrakis(dimethylamino)ethylene-(C60)1-x(C70)x

Kazuyoshi Tanaka, Tohru Sato, Tokio Yamabe, Kazunari Yoshizawa, Kenji Okahara, Anvar A. Zakhidov

研究成果: ジャーナルへの寄稿記事

18 引用 (Scopus)

抄録

Ferromagnetic properties of the molecular alloy complexes TDAE-(C60)1-x(C70)x (x=0.1-0.9), where TDAE is tetrakis(dimethylamino)ethylene, are studied by means of ESR and static magnetic susceptibility and magnetization experiments. Comparison of the magnetic properties of the present alloy complexes with those of TDAE-C60 and -C70 is made. The ESR g values and linewidths of these complexes remarkably increase below the Curie temperature Tc(x) at x<0.5. Moreover, these complexes with x=0.2, 0.4, and 0.5 show the S-shaped magnetization curves indicative of ferromagnetic correlation of spins below the Tc(x). The Tc(x) is suppressed with increasing x in such a way that Tc(0)=17.5 K and Tc(0.5)=6.1 K. This suppression is not so strong as one may expect for a quasi-one-dimensional itinerant ferromagnet. The three-dimensional spin correlations between C60 molecules both along the c axis and in the ab plane are important for this interesting magnetism.

元の言語英語
ページ(範囲)990-995
ページ数6
ジャーナルPhysical Review B
51
発行部数2
DOI
出版物ステータス出版済み - 1 1 1995

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ferromagnetism
ethylene
retarding
magnetization
Curie temperature
magnetic properties
magnetic permeability
curves
molecules

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

これを引用

Weak suppression of ferromagnetism in tetrakis(dimethylamino)ethylene-(C60)1-x(C70)x. / Tanaka, Kazuyoshi; Sato, Tohru; Yamabe, Tokio; Yoshizawa, Kazunari; Okahara, Kenji; Zakhidov, Anvar A.

:: Physical Review B, 巻 51, 番号 2, 01.01.1995, p. 990-995.

研究成果: ジャーナルへの寄稿記事

Tanaka, Kazuyoshi ; Sato, Tohru ; Yamabe, Tokio ; Yoshizawa, Kazunari ; Okahara, Kenji ; Zakhidov, Anvar A. / Weak suppression of ferromagnetism in tetrakis(dimethylamino)ethylene-(C60)1-x(C70)x. :: Physical Review B. 1995 ; 巻 51, 番号 2. pp. 990-995.
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abstract = "Ferromagnetic properties of the molecular alloy complexes TDAE-(C60)1-x(C70)x (x=0.1-0.9), where TDAE is tetrakis(dimethylamino)ethylene, are studied by means of ESR and static magnetic susceptibility and magnetization experiments. Comparison of the magnetic properties of the present alloy complexes with those of TDAE-C60 and -C70 is made. The ESR g values and linewidths of these complexes remarkably increase below the Curie temperature Tc(x) at x<0.5. Moreover, these complexes with x=0.2, 0.4, and 0.5 show the S-shaped magnetization curves indicative of ferromagnetic correlation of spins below the Tc(x). The Tc(x) is suppressed with increasing x in such a way that Tc(0)=17.5 K and Tc(0.5)=6.1 K. This suppression is not so strong as one may expect for a quasi-one-dimensional itinerant ferromagnet. The three-dimensional spin correlations between C60 molecules both along the c axis and in the ab plane are important for this interesting magnetism.",
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AU - Tanaka, Kazuyoshi

AU - Sato, Tohru

AU - Yamabe, Tokio

AU - Yoshizawa, Kazunari

AU - Okahara, Kenji

AU - Zakhidov, Anvar A.

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N2 - Ferromagnetic properties of the molecular alloy complexes TDAE-(C60)1-x(C70)x (x=0.1-0.9), where TDAE is tetrakis(dimethylamino)ethylene, are studied by means of ESR and static magnetic susceptibility and magnetization experiments. Comparison of the magnetic properties of the present alloy complexes with those of TDAE-C60 and -C70 is made. The ESR g values and linewidths of these complexes remarkably increase below the Curie temperature Tc(x) at x<0.5. Moreover, these complexes with x=0.2, 0.4, and 0.5 show the S-shaped magnetization curves indicative of ferromagnetic correlation of spins below the Tc(x). The Tc(x) is suppressed with increasing x in such a way that Tc(0)=17.5 K and Tc(0.5)=6.1 K. This suppression is not so strong as one may expect for a quasi-one-dimensional itinerant ferromagnet. The three-dimensional spin correlations between C60 molecules both along the c axis and in the ab plane are important for this interesting magnetism.

AB - Ferromagnetic properties of the molecular alloy complexes TDAE-(C60)1-x(C70)x (x=0.1-0.9), where TDAE is tetrakis(dimethylamino)ethylene, are studied by means of ESR and static magnetic susceptibility and magnetization experiments. Comparison of the magnetic properties of the present alloy complexes with those of TDAE-C60 and -C70 is made. The ESR g values and linewidths of these complexes remarkably increase below the Curie temperature Tc(x) at x<0.5. Moreover, these complexes with x=0.2, 0.4, and 0.5 show the S-shaped magnetization curves indicative of ferromagnetic correlation of spins below the Tc(x). The Tc(x) is suppressed with increasing x in such a way that Tc(0)=17.5 K and Tc(0.5)=6.1 K. This suppression is not so strong as one may expect for a quasi-one-dimensional itinerant ferromagnet. The three-dimensional spin correlations between C60 molecules both along the c axis and in the ab plane are important for this interesting magnetism.

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