Mn-based antiperovskite compounds in the form Mn${}_{3}AX$, where $A$ is a main group element and $X$ is C or N, undergo magnetostructural transitions with which these materials acquire magnetocaloric, giant magnetoresistance and spin-transport properties, which can be modified or tailored by manipulating the compositions of numerous compounds. This enables closer investigations and better understandings of the underlying principles governing these properties. Mn${}_{3-x}$Ni${}_x$GaC, which is a derivative of the prototype Mn${}_3$GaC antiperovskite would normally be expected to form a cubic structure with a homogeneous composition. Contrary to this, we find that the addition of Ni leads to a heterogenous compound consisting of an antiperovskite part and a Ni${}_2$MnGa Heusler insertions. The system shows kinetic arrest features, which we study as a function of Ni composition using the techniques of x-ray diffraction, magnetization, and neutron diffraction under magnetic-field.

中文翻译：

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具有Ni2MnGa Heusler插入的抗钙钛矿Mn3-xNixGaC化合物的异质磁性和动力学抑制

Mn形式的Mn基抗钙钛矿化合物${}_3\mathrm{一种}X$，在哪里 $\mathrm{一种}$ 是主要的群体元素， $X$C为C或N时，会经历磁结构转变，这些材料将获得磁热，巨大的磁阻和自旋传输特性，可以通过控制多种化合物的组成来对其进行修饰或定制。这样可以进行更深入的研究，并且可以更好地了解控制这些属性的基本原理。锰${}_{3-X}$你${}_X$GaC，它是原型Mn的衍生物${}_3$通常期望GaC抗钙钛矿形成具有均质组成的立方结构。与此相反，我们发现添加镍会导致由抗钙钛矿部分和镍组成的异质化合物${}_2$MnGa Heusler插入。该系统显示了动力学阻滞特征，我们将使用磁场下的X射线衍射，磁化和中子衍射技术研究其作为Ni成分的函数。