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arXiv 0909.4720cond-mat.mtrl-scicond-mat.other
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Mn3Al2Si3O12石榴石型和玻璃型的磁性

The magnetic properties of the Garnet and glass forms of Mn3Al2Si3O12

G. C. Lau, T. Klimczuk, F. Ronning, T. M. McQueen, R. J. Cava

摘要:

本文报道了Mn_3Al_2Si_3O_(12)晶体石榴石和玻璃态的磁化率和比热。这使得可以直接比较三角形石榴石晶格和结构无序固体在相同组成下各向同性自旋5/2 Mn^2+(3d^5)的磁阻挫程度。结果表明,玻璃相比结晶相表现出更明显的磁挫迹象。通过对钙铝榴石和锰铝榴石的比热的比较,提供了锰铝榴石中异常比热的信息。

英文摘要:

The magnetic susceptibilities and specific heats of the crystalline garnet and glass forms of Mn3Al2Si3O12 are reported. This allows a direct comparison of the degree of magnetic frustration of the triangle-based garnet lattice and the structurally disordered solid at the same composition for isotropic spin 5/2 Mn^2+ (3d^5). The results show that the glass phase shows more pronounced signs of magnetic frustration than the crystalline phase. Through comparison of the specific heats of Ca3Al2Si3O12 (grossular) and Mn3Al2Si3O12 (spessartine) garnets, information is provided concerning the anomalous extra specific heat in the latter material.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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