Unveiling the (De)coupling of magnetostructural transition nature in magnetocaloric R5Si2Ge2 (R = Tb, Gd) materials

被引：18

作者：

Pereira, A. M. ^{[1
,2
]}

Kampert, E. ^{[3
]}

Moreira, J. M. ^{[1
,2
]}

Zeitler, U. ^{[3
]}

Belo, J. H. ^{[1
,2
]}

Magen, C. ^{[4
]}

Algarabel, P. A. ^{[5
,6
]}

Morellon, L. ^{[5
,6
,7
]}

Ibarra, M. R. ^{[5
,6
,7
]}

Goncalves, J. N. ^{[8
,9
]}

Amaral, J. S. ^{[8
,9
]}

Amaral, V. S. ^{[8
,9
]}

Sousa, J. B. ^{[1
,2
]}

Araujo, J. P. ^{[1
,2
]}

机构：

[1] Univ Porto, IFIMUP, P-4169007 Oporto, Portugal

[2] Univ Porto, IN Inst Nanosci & Nanotechnol, Dept Fis & Astron, Fac Ciencias, P-4169007 Oporto, Portugal

[3] Radboud Univ Nijmegen, High Field Magnet Lab, NL-6525 ED Nijmegen, Netherlands

[4] Univ Zaragoza, Inst Nanociencia Aragon ARAID, E-50009 Zaragoza, Spain

[5] Univ Zaragoza, Inst Ciencia Mat Aragon, E-50009 Zaragoza, Spain

[6] CSIC, Zaragoza 50009, Spain

[7] Univ Zaragoza, Inst Nanociencia Aragon, E-50009 Zaragoza, Spain

[8] Univ Aveiro, Dept Fis, P-3810193 Aveiro, Portugal

[9] Univ Aveiro, CICECO, P-3810193 Aveiro, Portugal

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 13期

关键词：

ferromagnetic materials; ferromagnetic-paramagnetic transitions; free energy; gadolinium compounds; magnetic transition temperature; magnetisation; magnetocaloric effects; paramagnetic materials; silicon compounds; solid-state phase transformations; terbium compounds;

D O I：

10.1063/1.3640213

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a detailed study on the magnetization under high magnetic fields of Tb5Si2Ge2 and Gd5Si2Ge2 compounds. From the Arrott plot construction (A. Arrott, Phys. Rev. 108, 1394 (1957)), we were able to estimate the T-C of each structure (M and O(I)) experimentally and found that the T-C of the O(I) phase can be directly obtained by extrapolating the T-C curve of this phase in the respective phase diagram. Using a physical model based on free energy considerations, one explains the (de) coupling of the magnetic and structural transitions in R-5(SixGe1-x)(4) (R = Tb, Gd) compounds. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3640213]

引用

页数：3

共 50 条

[41] Influence of tin on the crystal structure and magnetocaloric effect of Gd5Si2Ge2
Zhang, TB
Fu, H
Chen, YG
Tu, MJ
Tang, YB
RARE METAL MATERIALS AND ENGINEERING, 2005, 34 (10) : 1528 - 1531
[42] The giant magnetocaloric effect in Gd5Si2Ge2 with low purity gadolinium
Zhang, TB
Chen, YG
Fu, H
Teng, BH
Tang, YB
Tu, MJ
CHINESE SCIENCE BULLETIN, 2005, 50 (16): : 1811 - 1814
[43] Tuning the structural and magnetocaloric properties of Gd5Si2Ge2 with Nd substitution
Uthaman, Bhagya
Raji, G. R.
Thomas, Senoy
Suresh, K. G.
Varma, Manoj Raama
JOURNAL OF APPLIED PHYSICS, 2015, 117 (01)
[44] Magnetocaloric effect of Gd5Si2Ge2 alloys in low magnetic field
Zeng H.
Kuang C.
Zhang J.
Yue M.
Bulletin of Materials Science, 2011, 34 (4) : 825 - 828
[45] The giant magnetocaloric effect in Gd5Si2Ge2 with low purity gadolinium
ZHANG Tiebang1
2. Department of Physics
ChineseScienceBulletin, 2005, (16) : 141 - 144
[46] Theoretical investigation on the barocaloric and magnetocaloric properties in the Gd5Si2Ge2 compound
Alvaranega, T. S. T.
Alho, B. P.
Nobrega, E. P.
Ribeiro, P. O.
Caldas, A.
de Sousa, V. S. R.
Magnus, A.
Carvalho, G.
de Oliveira, N. A.
von Ranke, P. J.
JOURNAL OF APPLIED PHYSICS, 2014, 116 (24)
[47] Magnetocaloric effect of Gd5Si2Ge2 alloys in low magnetic field
Zeng, Hong
Kuang, Chunjiang
Zhang, Jiuxing
Yue, Ming
BULLETIN OF MATERIALS SCIENCE, 2011, 34 (04) : 825 - 828
[48] Phase control studies in Gd5Si2Ge2 giant magnetocaloric compound
Belo, J. H.
Pereira, A. M.
Ventura, J.
Oliveira, G. N. P.
Araujo, J. P.
Tavares, P. B.
Fernandes, L.
Algarabel, P. A.
Magen, C.
Morellon, L.
Ibarra, M. R.
JOURNAL OF ALLOYS AND COMPOUNDS, 2012, 529 : 89 - 95
[49] Investigation of the magnetism and magnetocaloric effect in the R2CoAl3 (R = Gd, Tb, Dy, and Ho) compounds
Meng, Lingjian
Jia, Youshun
Qi, Yang
Wang, Qiang
Li, Lingwei
JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 715 : 242 - 246
[50] Influence of Sn adding on the magnetocaloric effect of Gd5Si2Ge2 alloy
Hou Xueling
Kong Junfeng
Li Shitao
Zhou Bangxin
Ni Hansen
Xu Hui
Zhang Shaojie
RARE METAL MATERIALS AND ENGINEERING, 2007, 36 (09) : 1605 - 1607

← 1 2 3 4 5 →