阻挫磁性材料通常具有能量简并的量子基态、元激发和量子相变行为，是目前凝聚态物理的研究热点。在外加磁场下，这类材料往往会发生无序到有序的量子相变，导致各种新奇量子态的产生，并呈现出许多内涵极为丰富的物理特性。其中一种物理现象就是分数磁化平台。由于材料内部交换作用力往往比较大，这种宏观量子效应一般需要在强磁场下才能观测和研究。脉冲强磁场作为一种极端实验条件，成为研究这类量子现象的有力手段之一。本项目计划利用脉冲强磁场实验条件，研究具有二维特征的三角基阻挫磁性材料，具体包括研究磁化平台的形成机制、多铁性与平台之间的关联、巡游电子对平台的影响等科学问题。通过本项目，希望解决阻挫磁性材料研究中的某些问题，建立复杂多体物理中各种相互作用与量子态之间的关联，并探索极端实验条件下的新现象、新物态。

Frustrated magnet is now an important topic in condensed matter physics owing to their degenerate ground state, elementary excitations and behavior of quantum phase transition. With the application of magnetic fields, this kind of materials usually undergoes quantum phase transition from disorder to order, leading to a variety of new quantum states and physical phenomena. Particular interest is given by the novel quantum state called fractional magnetization plateau. This phenomenon is only observed in sufficient magnetic fields due to relatively large exchange interactions in these materials. With respect to this reason, pulsed high magnetic field becomes one of the most powerful tools to study this macroscopic quantum effect. In the present project, we will focus our interests on two-dimensional triangular magnets. Various pulsed field techniques will be employed to investigate origin of magnetization plateau, the relationship of multiferroic, and the effect of itinerant electrons. Through these works, we expect to solve some basic problem in frustrated magnets, establish the correlation between various interactions and quantum states in complex many-body system, and also explore some new physics and novel states in high magnetic fields.