| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
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タイトル |
Magnetic properties of low-dimensional quantum spin systems made of stable organic biradicals PNNNO, F2PNNNO, and PIMNO |
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言語 |
en |
| 作成者 |
Hosokoshi, Yuko
Nakazawa, Yasuhiro
Inoue, Katsuya
Takizawa, Kohichi
Nakano, Hiroki
Takahashi, Minoru
Goto, Tsuneaki
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| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
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権利情報 |
Copyright (c) 1999 The American Physical Society. |
| 内容記述 |
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内容記述 |
Stable organic biradical crystals PNNNO, F2PNNNO, and PIMNO of the PNNNO family were synthesized. {PNNNO=2-[4′- (N-tert-butyl-N-oxyamino)phenyl]-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazol-1- oxyl 3-oxide, F2PNNNO= 2-[2′,6′,-difluoro-4′-(N-tert-butyl-7V-oxyamino)phenyl]-4,4,5, 5-tetramethyl-4, 5-dihydro-1H-imidazol-1-oxyl 3-oxide, PIMNO=2-[4′-(N-tert-butyl-N-oxyamino)-phenyl]-4,4,5, 5-tetramethyl-4,5-dihydro-1H-imidazol-1-oxyl.} PNNNO and PIMNO crystallize to form quasi-one-dimensional lattices, but F2PNNNO to form a quasi-two-dimensional lattice. The temperature dependences of the susceptibility and the high-field magnetization process up to 34 T were measured down to 0.5 K. The results are analyzed by comparing with the theoretical calculations based on the crystal structures. PNNNO and PIMNO are considered to be antiferromagnetic Heisenberg spin chains consisting of S=1/2 spin pairs (dimers) in which the two spins are coupled ferromagnetically. At low temperatures, an antiferromagnetic ordering occurs in these crystals, which is confirmed by the thermodynamic discussion through specific heat measurements. On the other hand, F2PNNNO is thought to be a two-dimensional Heisenberg system, in which the spin pairs are connected by two types of antiferromagnetic interactions. The ground state is singlet. The high-field magnetization process shows a two-step saturation with a plateau of the half value of the saturation magnetization. |
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言語 |
en |
| 出版者 |
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出版者 |
American Physical Society |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版タイプ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
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識別子タイプ |
DOI |
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関連識別子 |
10.1103/PhysRevB.60.12924 |
| 関連情報 |
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識別子タイプ |
DOI |
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関連識別子 |
http://dx.doi.org/10.1103/PhysRevB.60.12924 |
| 収録物識別子 |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
1098-0121 |
| 収録物識別子 |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA11187113 |
| 開始ページ |
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開始ページ |
12 924 |
| 書誌情報 |
Physical Review B - Condensed Matter and Materials Physics
Physical Review B - Condensed Matter and Materials Physics
巻 60,
号 18,
p. 12 924-12 932,
発行日 1999-11-01
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| 旧ID |
18814 |
PhysRevB_60_12924.pdf (159.1 KB)
