Spin dynamics of the one dimensional ferrimagnet Mn(hfac)2 NITiPr studied by 1H-NMR

被引：0

作者：

Nishisaka, Y. ^{[1
]}

Furukawa, Y. ^{[1
]}

Kumagai, K. ^{[1
]}

Lascialfari, A. ^{[2
]}

Caneschi, A. ^{[3
]}

机构：

[1] Hokkaido Univ, Grad Sch Sci, Div Phys, Sapporo, Hokkaido 0600810, Japan

[2] Dept Fis, I-27100 Pavia, Italy

[3] Univ Florence, Dept Chem & INSTRMU, I-50121 Florence, Italy

来源：

LOW TEMPERATURE PHYSICS, PTS A AND B | 2006年 / 850卷

关键词：

one-dimensional ferrimagnet; spin dynamics; nuclear magnetic resonance;

D O I：

暂无

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

We have carried out H-1 nuclear magnetic resonance in a one-dimensional ferrimagnet Mn(hfac)(2)NITiPr formed by Mn2+ (s = 5/2) ions and nitonyl. nitroxide radicals (s = 1/2) to investigate the spin dynamics in the system. From the temperature dependence of the NMR spectrum it is revealed that, with decreasing temperature, spin correlations between the Mn2+ and radical spins develop, and that the direction of each spin moment becomes frozen on the time scale of the NMR frequency below 15 K. The dependence of the nuclear relaxation rate (1/T-1) on both temperature and magnetic field is also reported.

引用

页码：1047 / +

页数：2

共 8 条

[1] MAGNETIC PHASE-TRANSITION AND LOW-TEMPERATURE EPR-SPECTRA OF A ONE-DIMENSIONAL FERRIMAGNET FORMED BY MANGANESE(II) AND A NITRONYL NITROXIDE
CANESCHI, A
GATTESCHI, D
RENARD, JP
REY, P
SESSOLI, R
[J]. INORGANIC CHEMISTRY, 1989, 28 (10) : 1976 - 1980
[2] FABRIZIO F, 1995, MOL PHYS, V85, P1073
[3] 1H NMR investigation of the magnetic spin configuration in the molecule-based ferrimagnet [MnTFPP][TCNE] -: art. no. 064422
Fardis, M
Diamantopoulos, G
Papavassiliou, G
Pokhodnya, K
Miller, JS
Rittenberg, DK
Christides, C
[J]. PHYSICAL REVIEW B, 2002, 66 (06): : 644221 - 644226
[4] Ground-state magnetization of the molecular cluster Mn12O12-acetate as seen by proton NMR
Furukawa, Y
Watanabe, K
Kumagai, K
Jang, ZH
Lascialfari, A
Borsa, F
Gatteschi, D
[J]. PHYSICAL REVIEW B, 2000, 62 (21): : 14246 - 14251
[5] Nuclear spin-lattice relaxation in one-dimensional Heisenberg ferrimagnets: Three-magnon vs Raman processes
Hori, H
Yamamoto, S
[J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2004, 73 (06) : 1453 - 1456
[6] HORI H, 2004, PHYS REV B, V85, P5302
[7] Elementary excitations of Heisenberg ferrimagnetic spin chains
Yamamoto, S
Brehmer, S
Mikeska, HJ
[J]. PHYSICAL REVIEW B, 1998, 57 (21): : 13610 - 13616
[8] Thermodynamic properties of Heisenberg ferrimagnetic spin chains: Ferromagnetic-antiferromagnetic crossover
Yamamoto, S
Fukui, T
[J]. PHYSICAL REVIEW B, 1998, 57 (22) : R14008 - R14011

← 1 →