CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
Prev
Next
|
|
|
Giant magnetocaloric effect in Tb5Ge2-xSi2-xMn2x compounds |
E. Yüzüaka)†, B. Emrea), Y. Elermana), and A. Yücelb) |
a Department of Engineering Physics, Faculty of Engineering, Ankara University, 06100 Besevler, Ankara, Turkey; b Faculty of Science and Letters, Physics Department, Mugla University, K?tekli 48000 Mugla, Turkey |
|
|
Abstract The crystal structure, magnetic and magnetocaloric characteristics of the pseduo ternary compounds of Tb$_{5}$Ge$_{2-x}$Si$_{2-x}$Mn$_{2x}$ (0 $\leq $ 2$x$ $\leq$ 0.1) were investigated by x-ray powder diffraction and magnetization measurements. The x-ray powder diffraction results show that all compounds preserve the monoclinic phase as the majority phase and all the synthesized compounds were observed to be ferromagnetic from magnetization measurements. Magnetic phase transitions were interpreted in terms of Landau theory. Maximum isothermal magnetic entropy change value (20.84 J$\cdot$kg$^{-1}$$\cdot$K$^{-1}$) was found for Tb$_{5}$Ge$_{1.95}$Si$_{1.95}$Mn$_{0.1}$ at around 123 K in the magnetic field change of 5 T.
|
Received: 19 May 2009
Revised: 17 September 2009
Accepted manuscript online:
|
PACS:
|
75.30.Sg
|
(Magnetocaloric effect, magnetic cooling)
|
|
75.60.Ej
|
(Magnetization curves, hysteresis, Barkhausen and related effects)
|
|
61.05.cp
|
(X-ray diffraction)
|
|
75.30.Kz
|
(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))
|
|
61.66.Dk
|
(Alloys )
|
|
75.50.Cc
|
(Other ferromagnetic metals and alloys)
|
|
Fund: Project supported by the Scientific
and Technological Research Council of Turkey under Project No.
104T382. |
Cite this article:
E. Yüzüak, B. Emre, Y. Elerman, and A. Yücel Giant magnetocaloric effect in Tb5Ge2-xSi2-xMn2x compounds 2010 Chin. Phys. B 19 057501
|
[1] |
Warburg E 1881 Ann. Phys. 13 141
|
[2] |
Pecharsky A O, Gschneidner Jr K A and Pecharsky V K 2003 J. Appl. Phys. 93 4722
|
[3] |
Cam Thanh D T, Br\"{Uck E, Tegus O, Llaasse J C P and Bushow K H J 2007 J. Magn. Magn. Mater. 310 E 1012
|
[4] |
Mandal K, Pal D, Gutfleisch O, Kerschl P and Mler K H 2007 J. Appl. Phys. 102 053906
|
[5] |
Pecharsky V K and Gschneidner Jr K A 2001 Adv. Mater. { (Weinheim) 13 683
|
[6] |
Gschneidner Jr K A, Percharsky V K and Tsokol A O 2005 Rep. Prog. Phys. 68 1479
|
[7] |
Morellon L, Magen C, Algarabel P A, Ibarra M R and Ritter C 2001 Appl. Phys. Lett. 79 1318
|
[8] |
Ritter C, Morellon L, Algarabel P A, Magen C and Ibarra M R 2002 Phys. Rev. B 65 094405
|
[9] |
Tegus O, Dagula O, Brck E, Zhang L, de Boer F R and Buschow K H J 2002 J. Appl. Phys. 91 8534
|
[10] |
Huang H, Pecharsky A O, Pecharsky V K and Gschneidner Jr K A 2002 Adv. Cryog. Eng. 614 11
|
[11] |
Thuy N P, Nong N V, Hien N T, Tai L T, Vinh T Q, Thang P D and Brck E 2002 J. Magn. Magn. Mater. 242 841
|
[12] |
Y\"{Uz\"{Uak E, Emre B, Y\"{Ucel A and Elerman Y 2009 J. Alloys and Compounds 476 929
|
[13] |
Y\"{Uz\"{Uak E, Emre B, Dincer I, Ener S, Y\"{Ucel A and Elerman Y 2009 J. Optoelectron. Adv. Mater. { SYMPOSIA
|
[14] |
Buschow K H J (ed) 1991 Handbook of Magnetic Materials Vol 6 (Amsterdam, North Holland) p271
|
[15] |
Pecharsky V K and Gschneidner Jr K A 1999 J. Appl. Phys. 86 565
|
[16] |
Zhang T, Chen Y, Teng B, Tang Y, Fu H and Tu M 2007 Materials Letters 61 440
|
[17] |
Paudyal D, Percharsky V K, Gschneidner Jr K A and Harmon B N 2006 Phys. Rev. B 73 1444061
|
[18] |
Krenke T, Acet M, Wassermann E F, Moya X, Manosa L and Planes A 2006 Phys. Rev. B 73 174413
|
[19] |
Arrot A 1957 Phys. Rev. 108 1394
|
[20] |
Pecharsky V K and Gschneidner Jr K A 2001 J. Appl. Phys. 90 4614
|
[21] |
Gschneidner K A and Pecharsky V K 2000 Annu. Rev. Mater. Sci. 30 387
|
[22] |
Inoue J and Shimizu M 1982 J. Phys. { F 12 1811
|
[23] |
Liu X B, Ryan D H and Altounian Z 2004 J. Magn. Magn. Mater. 270 305
|
[24] |
Haskel D, Lee Y B, Harmon B N, Islam Z, Lang J C, Srajer G, Mudryk Ya, Gschneidner Jr K A and Pecharsky V K 2007 Phys. Rev. Lett. 98 247205
|
No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
Altmetric
|
blogs
Facebook pages
Wikipedia page
Google+ users
|
Online attention
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
View more on Altmetrics
|
|
|