Dynamics of Single Molecular Magnet 2d-networks with frustration
令人沮丧的单分子磁体二维网络动力学
基本信息
- 批准号:22540351
- 负责人:
- 金额:$ 2.66万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2010
- 资助国家:日本
- 起止时间:2010 至 2012
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
In order to realize the 2D-spin ice system, we synthesized layered single molecular magnet (SMM) networks [Mn(5-Rsaltmen)]4 [M(CN)6]A・nH_2O(M=Mn, Fe, Co; R=H, Me; A = ClO_4^-, PF6^-, CF_3SO_3^-), and measured the magnetic properties, in particular analyzing the magnetic relaxation. From the results, we found that the system with M=Mn is a strongly frustrated system, and the relaxation model is the Davidson-Cole type indicating that the system is spin ice-like. The origin of the frustration is a competition between the orthogonally oriented two uniaxial axes of the single molecular magnet unit and the ferromagnetic interaction between the SMM unit and the M complex in 2D plane. We also observed that for a disorder introduced system (M = Mn1-_xFe_x), the spin ice state of x=0 is melted for x=0.1 and ordered into a randomly frozen state for x>0.3. In addition, the relation between the structure and the magnetic properties is studied for various M, R, and A.
为了实现二维自旋冰体系,我们合成了层状单分子磁体[Mn(5-Rsaltmen)]4 [M(CN)6]A·nH_2O(M=Mn,Fe,Co; R=H,Me; A = ClO_4^-,PF_6 ^-,CF_3SO_3^-),并对其磁性进行了测量,特别是对磁弛豫进行了分析。结果表明,M=Mn的体系是一个强阻挫体系,弛豫模型为Davidson-Cole型,表明该体系是自旋冰型的.挫挫的起因是在二维平面内,单个分子磁体单元的正交取向的两个单轴之间的竞争以及SMM单元与M复合物之间的铁磁相互作用。我们还观察到,对于引入无序的系统(M = Mn_(1-x)Fe_x),当x=0.1时,x=0的自旋冰态被熔化,当x>0.3时,自旋冰态被有序化为随机冻结态。此外,还研究了不同M、R和A时结构与磁性能之间的关系。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
層状二次元ネットワーク錯体の置換基、アニオン変化による磁気的フラストレーションの変化
由于层状二维网络复合体中取代基和阴离子的变化而导致的磁挫败变化
- DOI:
- 发表时间:2012
- 期刊:
- 影响因子:0
- 作者:石井梨夏子;加知千裕;齊藤敏明;赤星大介;宮坂等
- 通讯作者:宮坂等
スピネル化合物CoAl_2O_4のインバージョン制御と幾何学的フラストレーション
尖晶石化合物CoAl_2O_4的反转控制与几何挫败
- DOI:
- 发表时间:2010
- 期刊:
- 影响因子:0
- 作者:花島健太郎;他
- 通讯作者:他
Crossover of magnetic relaxation fro2D-spin ice like state to ordered state in layered single molecular magnet networks
层状单分子磁网络中磁弛豫从二维自旋冰态到有序态的交叉
- DOI:
- 发表时间:2012
- 期刊:
- 影响因子:0
- 作者:Bexco(Busan;Korea) Yuta Kodama;Rikako Ishii;Chihiro Kachi-Terajima;Hitoshi Miyasaka;Daisuke Akahoshi and Toshiaki Saito
- 通讯作者:Daisuke Akahoshi and Toshiaki Saito
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SAITO Toshiaki其他文献
SAITO Toshiaki的其他文献
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{{ truncateString('SAITO Toshiaki', 18)}}的其他基金
Elucidation of nitrous oxide production mechanisms focusing on the mRNA expression related to nitric oxide production and decomposition
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21510089 - 财政年份:2009
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MONITORING SYSTEMS AND PREVENTION TECHNOLOGIES FOR DEEP UNDERGROUND ENVIRONMENT
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12305068 - 财政年份:2000
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The progress of failure of mining developed cavern and its influence on the ground surface
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10650915 - 财政年份:1998
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$ 2.66万 - 项目类别:
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Interaction if Cell Adhesion Molecules and Tumor Cells on the Production of Matrix Metalloprotease in Gynecological Cancers
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- 批准号:
06671662 - 财政年份:1994
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$ 2.66万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
CELL ADHESION MOLECULES AND INVASION OF UTERINE CANCER
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05454452 - 财政年份:1993
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$ 2.66万 - 项目类别:
Grant-in-Aid for General Scientific Research (B)
Study on the Time Dependent Bihavior of Rocks in a Post Failure Region
破坏后区域岩石随时间变化的行为研究
- 批准号:
02650452 - 财政年份:1990
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$ 2.66万 - 项目类别:
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Characterization and induction of antitumor lymphokine derived from human lymph node cell
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- 批准号:
02670746 - 财政年份:1990
- 资助金额:
$ 2.66万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
New System for Rock Stress Determination by Stress Relief Methods
通过应力消除方法测定岩石应力的新系统
- 批准号:
63850137 - 财政年份:1988
- 资助金额:
$ 2.66万 - 项目类别:
Grant-in-Aid for Developmental Scientific Research
Design Method for Rock Bolting in Mine Galleries
矿山巷道锚杆支护设计方法
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60550443 - 财政年份:1985
- 资助金额:
$ 2.66万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
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