Phase Transitions and Magnetocaloric Properties in MnCo 1−x Zr x Ge Compounds

Aryal, Anil; Quetz, Abdiel; Pandey, Sudip; Dubenko, Igor; Stadler, Shane; Ali, Naushad

doi:10.1155/2017/2683789

Phase Transitions and Magnetocaloric Properties in MnCo _1−x Zr _x Ge Compounds

Journal Article · Tue Jun 13 00:00:00 EDT 2017 · Advances in Condensed Matter Physics

DOI:https://doi.org/10.1155/2017/2683789· OSTI ID:1363725

^[1]; Quetz, Abdiel ^[1]; ^[1]; Dubenko, Igor ^[1]; Stadler, Shane ^[2]; Ali, Naushad ^[1]

Southern Illinois Univ., Carbondale, IL (United States). Dept. of Physics
Louisiana State Univ., Baton Rouge, LA (United States). Dept. of Physics and Astronomy

The structural, magnetic, and magnetocaloric properties of $MnC o_{1 - x} Z r_{x} Ge$ ( $0.01 \leq x \leq 0.04$ ) have been studied through X-ray diffraction, differential scanning calorimetry, and magnetization measurements. Results indicate that the partial substitution of Zr for Co in $MnC o_{1 - x} Z r_{x} Ge$ decreases the martensitic transition temperature ( $T_{M}$ ). For $x$ = 0.02, $T_{M}$ was found to coincide with the ferromagnetic transition temperature ( $T_{C}$ ) resulting in a first-order magnetostructural transition (MST). A further increase in zirconium concentration ( $x$ = 0.04) showed a single transition at $T_{C}$ . The MST from the paramagnetic to ferromagnetic state results in magnetic entropy changes ( $- Δ S_{M}$ ) of 7.2 J/kgK for $Δ H$ = 5 T at 274 K for $x$ = 0.02. The corresponding value of the relative cooling power (RCP) was found to be 266 J/kg for $Δ H$ = 5 T. The observed large value of MCE and RCP makes this system a promising material for magnetic cooling applications.

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Research Organization:: Louisiana State Univ., Baton Rouge, LA (United States); Southern Illinois Univ., Carbondale, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: FG02-06ER46291; SC0010521

OSTI ID:: 1363725

Alternate ID(s):: OSTI ID: 1430123

Journal Information:: Advances in Condensed Matter Physics, Journal Name: Advances in Condensed Matter Physics Vol. 2017; ISSN 1687-8108

Publisher:: HindawiCopyright Statement

Country of Publication:: Egypt

Language:: English

References (14)

Pressure dependence of the magnetic transition temperature of the CoMnGe 1-x Si x system NizioŁ, S.; Zach, R.; Senateur, J. P. Journal of Magnetism and Magnetic Materials, Vol. 79, Issue 3 https://doi.org/10.1016/0304-8853(89)90188-1	journal	July 1989
Magneto-volume effect of MnCo1−xGe(0⩽x⩽0.2) Kanomata, T.; Ishigaki, H.; Suzuki, T. Journal of Magnetism and Magnetic Materials, Vol. 140-144 https://doi.org/10.1016/0304-8853(94)00833-7	journal	February 1995
Critical behavior near the ferromagnetic to paramagnetic phase transition temperature in polycrystalline La0.7Ca0.2Sr0.1Mn1−Cr O3 (x= 0.15 and 0.2) Dhahri, Ah.; Jemmali, M.; Hussein, M. Journal of Alloys and Compounds, Vol. 618 https://doi.org/10.1016/j.jallcom.2014.08.128	journal	January 2015
Magnetocaloric effects in Ni–Mn–X based Heusler alloys with X=Ga, Sb, In Dubenko, Igor; Khan, Mahmud; Pathak, Arjun Kumar Journal of Magnetism and Magnetic Materials, Vol. 321, Issue 7 https://doi.org/10.1016/j.jmmm.2008.11.043	journal	April 2009
Diffusionless orthorhombic to hexagonal transitions in ternary silicides and germanides Johnson, V. Inorganic Chemistry, Vol. 14, Issue 5 https://doi.org/10.1021/ic50147a032	journal	May 1975
Transition-metal-based magnetic refrigerants for room-temperature applications Tegus, O.; Brück, E.; Buschow, K. H. J. Nature, Vol. 415, Issue 6868 https://doi.org/10.1038/415150a	journal	January 2002
Giant magnetocaloric effect of MnAs1−xSbx Wada, H.; Tanabe, Y. Applied Physics Letters, Vol. 79, Issue 20 https://doi.org/10.1063/1.1419048	journal	November 2001
Vacancy induced structural and magnetic transition in MnCo1−xGe Wang, Jian-Tao; Wang, Ding-Sheng; Chen, Changfeng Applied Physics Letters, Vol. 89, Issue 26 https://doi.org/10.1063/1.2424273	journal	December 2006
Phase transitions and magnetocaloric and transport properties in off-stoichiometric GdNi2Mnx Aryal, Anil; Quetz, Abdiel; Pandey, Sudip Journal of Applied Physics, Vol. 119, Issue 4 https://doi.org/10.1063/1.4940877	journal	January 2016
Pressure-tuned magnetocaloric effect in Mn 0.93 Cr 0.07 CoGe Caron, L.; Trung, N. T.; Brück, E. Physical Review B, Vol. 84, Issue 2 https://doi.org/10.1103/PhysRevB.84.020414	journal	July 2011
Giant Magnetocaloric Effect in Gd5(Si2Ge2) Pecharsky, V. K.; Gschneidner, Jr., K. A. Physical Review Letters, Vol. 78, Issue 23, p. 4494-4497 https://doi.org/10.1103/physrevlett.78.4494	journal	June 1997
Magnetic properties of the Mn1.9 − x Co x Ge compounds with a hexagonal crystal structure Markin, P. E.; Mushnikov, N. V.; Khrabrov, V. I. The Physics of Metals and Metallography, Vol. 106, Issue 5 https://doi.org/10.1134/S0031918X08110070	journal	November 2008
Magnetocaloric Materials Gschneidner, K. A.; Pecharsky, V. K. Annual Review of Materials Science, Vol. 30, Issue 1 https://doi.org/10.1146/annurev.matsci.30.1.387	journal	August 2000
Vacancy-tuned paramagnetic/ferromagnetic martensitic transformation in Mn-poor Mn _1-x CoGe alloys Liu, E. K.; Zhu, W.; Feng, L. EPL (Europhysics Letters), Vol. 91, Issue 1 https://doi.org/10.1209/0295-5075/91/17003	journal	July 2010

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