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首页> 外文期刊>Journal of Experimental and Theoretical Physics >Specific features of magnetic phase diagram of an MnSi helimagnet
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Specific features of magnetic phase diagram of an MnSi helimagnet

机译：MnSi螺旋磁铁的磁相图的特定特征

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摘要

Magnetization curves of MnSi single crystals have been measured in a range of temperatures T = 5.5-35 K and magnetic field strengths H ≤ 11 kOe for H [1 1 1], [0 0 1], and [1 1 0]. Special attention has been paid to the temperature interval near T _N = 28.8 K, where MnSi exhibits a transition to the state with a long-period helical magnetic structure. Some new features in the magnetic behavior of MnSi have been found. In particular, in an intermediate temperature region above the transition (28.8 K = T _N ≤ T < 31.5 K), the dM(H)/dH curves exhibit anomalies that are not characteristic of the typical paramagnetic state. It is established that the line of the characteristic field H(T) of this anomaly is a natural extrapolation of the temperature dependence of the field of the transition from a conical phase to an induced ferromagnetic phase observed at T < T _N. It is concluded that the properties of MnSi in the indicated intermediate region are related to and governed by those of the conical phase (rather than of the A phase). Based on these data, magnetic phase diagrams of MnSi for H [1 1 1], [0 0 1], and [1 1 0] are plotted and compared to diagrams obtained earlier by other methods.
机译：在H [1 1 1]，[0 0 1]和[1 1 0]的温度T = 5.5-35 K且磁场强度H≤11 kOe的范围内，已经测量了MnSi单晶的磁化曲线。特别注意的是在T _N = 28.8 K附近的温度区间，其中MnSi呈现出向具有长周期螺旋磁结构态的转变。已经发现MnSi的磁行为的一些新特征。特别是，在过渡温度以上的中间温度区域（28.8 K = T _N≤T <31.5 K），dM（H）/ dH曲线显示的异常不是典型顺磁状态的特征。可以确定的是，该异常的特征场H（T）的线是在T

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