التفاصيل البيبلوغرافية
| العنوان: |
Magnetically driven negative thermal expansion in antiperovskite Ga1-x Mnx N0.8Mn3 (0.1 ≤ x ≤ 0.3) |
| المؤلفون: |
Guo, X. G., Lin, J. C., Tong, P., Wang, M., Wu, Y., Yang, C., Song, B., Lin, S., Song, W. H., Sun, Y. P. |
| المساهمون: |
national key basic research, National Natural Science Foundation of China |
| المصدر: |
Applied Physics Letters ; volume 107, issue 20 ; ISSN 0003-6951 1077-3118 |
| بيانات النشر: |
AIP Publishing |
| سنة النشر: |
2015 |
| مصطلحات موضوعية: |
Physics and Astronomy (miscellaneous) |
| الوصف: |
Negative thermal expansion (NTE) was investigated for Ga1−xMnxN0.8Mn3 (0.1 ≤ x ≤ 0.3). As x increases, the temperature range where lattice contracts upon heating becomes broad and shifts to lower temperatures. The coefficient of linear thermal expansion beyond −40 ppm/K with a temperature interval of ∼50 K was obtained around room temperature in x = 0.2 and 0.25. Local lattice distortion which was thought to be intimately related to NTE is invisible in the X-ray pair distribution function of x = 0.3. Furthermore, a zero-field-cooling exchange bias was observed as a result of competing ferromagnetic (FM) and antiferromagnetic (AFM) orders. The concomitant FM order serves as an impediment to the growth of the AFM order, and thus broadens the temperature range of NTE. Our result suggests that NTE can be achieved in antiperovskite manganese nitrides by manipulating the magnetic orders without distorting the local structure. |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
English |
| DOI: |
10.1063/1.4936239 |
| DOI: |
10.1063/1.4936239/14472203/202406_1_online.pdf |
| الإتاحة: |
https://doi.org/10.1063/1.4936239Test |
| رقم الانضمام: |
edsbas.DB5C82A2 |
| قاعدة البيانات: |
BASE |
