Relative cooling power of La(FexSi1−x)13 after controlling the Curie temperature by hydrogenation and partial substitution of Ce

2007 ◽  
Vol 310 (2) ◽  
pp. e1006-e1007 ◽  
Author(s):  
A. Fujita ◽  
S. Fujieda ◽  
K. Fukamichi
Keyword(s):  
Curie Temperature ◽  
Relative Cooling Power ◽  
Partial Substitution ◽  
Cooling Power

Field Dependence of the Refrigerant Capacity for La0.6Ca0.4MnO3 Manganite

2009 ◽  
Vol 154 ◽  
pp. 163-168 ◽  
Author(s):  
R.A. Szymczak ◽  
Aleksandra Kolano-Burian ◽  
Roman Kolano ◽  
R. Puzniak ◽  
V.P. Dyakonov ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Curie Temperature ◽  
Statistical Model ◽  
Magnetic Entropy Change ◽  
Entropy Change ◽  
Relative Cooling Power ◽  
Cooling Power ◽  
Magnetic Entropy ◽  
Refrigerant Capacity ◽  
Jahn Teller

The magnetocaloric effect in La0.6Ca0.4MnO3 manganite has been investigated. The isothermal magnetization versus applied magnetic field at various temperatures in the vicinity of Curie temperature was measured, and the temperature dependence of magnetic entropy change was determined using Maxwell’s relation. This value is comparable to that in Gd. Nevertheless, the relative cooling power of La0.6Ca0.4MnO3 was shown to be considerably lower than that of Gd. The experimental results have been analyzed in frames of a phenomenological statistical model. This model considers explicitly Jahn-Teller interactions and allows prediction of the field dependences of the magnetic entropy change and the relative cooling power.

scholarly journals Giant isothermal entropy change In (111)-oriented PMN–PT thin film

2014 ◽  
Vol 04 (04) ◽  
pp. 1450026 ◽  
Author(s):  
Mahmoud A. Hamad
Keyword(s):  
Thin Film ◽  
Heat Capacity ◽  
Curie Temperature ◽  
Electric Field ◽  
Curie Point ◽  
Entropy Change ◽  
Relative Cooling Power ◽  
Cooling Power ◽  
Field Shift

An isothermal entropy change of 240 nm (111)-oriented PMN–PT 65/35 film near the ferroelectric Curie temperature, relative cooling power (RCP) and change of heat capacity have been investigated. The extracted data characterized giant isothermal entropy change of more than 16 J/kg K in electric field shift ΔE of 455 kV cm-1, which is nearly twice than that found for PbZr 0.95 Ti 0.05 O 3 thin film at 492 kV cm-1 near the Curie point. Furthermore, the RCP ≈ 700 J/kg and change of heat capacity ≈ 233 J/kg K in electric field shift ΔE of 747 kV cm-1.

Large Relative Cooling Power in Dy[sub 5]Si[sub 4]:Dy[sub 5]Si[sub 3] composite

2011 ◽  
Author(s):  
S. Shanmukharao Samatham ◽  
D. Venkateshwarlu ◽  
Swati Pandya ◽  
Mohan Gangrade ◽  
L. S. Sharath Chandra ◽  
...  
Keyword(s):  
Relative Cooling Power ◽  
Cooling Power

scholarly journals Relative cooling power modeling of lanthanum manganites using Gaussian process regression

RSC Advances ◽  
2020 ◽  
Vol 10 (35) ◽  
pp. 20646-20653 ◽  
Author(s):  
Yun Zhang ◽  
Xiaojie Xu
Keyword(s):  
Gaussian Process ◽  
Gaussian Process Regression ◽  
Relative Cooling Power ◽  
Cooling Power ◽  
Power Modeling ◽  
Lanthanum Manganites

Experimental vs. predicted relative cooling power of lanthanum manganites.

Tuning magnetoresistive and magnetocaloric properties via grain boundaries engineering in granular manganites

RSC Advances ◽  
2016 ◽  
Vol 6 (81) ◽  
pp. 77284-77290 ◽  
Author(s):  
Abd El-Moez A. Mohamed ◽  
Mohamed A. Mohamed ◽  
V. Vega ◽  
B. Hernando ◽  
A. M. Ahmed
Keyword(s):  
Grain Boundaries ◽  
Relative Cooling Power ◽  
Cooling Power ◽  
Magnetocaloric Properties

The effect of interface size on the relative cooling power and magnetoresistive properties of La0.7Ba0.3MnO3 compounds is investigated.

Enhancement of Magnetocaloric Effects in Single Phase La1-zNdz(Fe0.88S 0.12)13

2007 ◽  
Vol 561-565 ◽  
pp. 1093-1096 ◽  
Author(s):  
S. Fujieda ◽  
A. Fujita ◽  
Kazuaki Fukamichi
Keyword(s):  
Single Phase ◽  
Entropy Change ◽  
Ferromagnetic State ◽  
Partial Substitution ◽  
Cooling Power ◽  
Itinerant Electron ◽  
Magnetic Field Change ◽  
First Order Transition ◽  
Cure Temperature ◽  
The Magnetic Field

The single phase of a cubic NaZn13-type La1-zNdz(Fe0.88Si0.12)13 is obtained in the region z ≤ 0.2. The field-induced first-order transition from the paramagnetic to ferromagnetic state, that is, the itinerant-electron metamagnetic (IEM) transition is kept after the substitution of Nd. In addition, a discontinuous change of magnetization at the Cure temperature becomes larger with increasing z. As a result, the isothermal magnetic entropy change and the relative cooling power in the magnetic field change from 0 to 5 T increase to –27 J/kg K and 518 J/kg, respectively, by the partial substitution of z = 0.2.

scholarly journals Magnetocaloric effect and improved relative cooling power in (La0.7Sr0.3MnO3/SrRuO3) superlattices

2011 ◽  
Vol 23 (5) ◽  
pp. 052201 ◽  
Author(s):  
Q Zhang ◽  
S Thota ◽  
F Guillou ◽  
P Padhan ◽  
V Hardy ◽  
...  
Keyword(s):  
Magnetocaloric Effect ◽  
Relative Cooling Power ◽  
Cooling Power
Sign in / Sign up

Export Citation Format

Share Document