E-resources
Peer reviewed
-
Çetin, Selda Kılıç; Acet, Mehmet; Güneş, Mustafa; Ekicibil, Ahmet; Farle, Michael
Journal of alloys and compounds, 11/2015, Volume: 650Journal Article
We present an investigation on structure, magnetic and magnetocaloric properties of the perovskite manganites (La1−xSmx)0.67Pb0.33MnO3 (x = 0, 0.1, 0.2, 0.3) synthesized by sol–gel technique. The XRD patterns show that all synthesized samples have reflections typical of the perovskite structure with orthorhombic symmetry. Thermomagnetic measurements showed that all the samples display a paramagnetic–ferromagnetic transition with decreasing temperature. The Curie temperature decreases with increasing Sm content from 358 K for x = 0–286 K for x = 0.3. We determined the isothermal magnetic entropy changes of all the samples from the magnetization measurements and furthermore measured the adiabatic temperature change of the sample for x = 0.3 directly. The results showed that the adiabatic temperature change, determined using together the entropy change and the specific heat and the value obtained by direct temperature change measurements both give 1.3 K for a magnetic field change of 3 T at about 280 K. We also measured the cyclic adiabatic temperature-change of the sample and the results indicate that the sample undergoes a reversible temperature-change on field-cycling which is essential for magnetic refrigeration. Display omitted •Magnetocaloric properties of (La1−xSmx)0.67Pb0.33MnO3 (0.0 ≤ x ≤ 0.3) have been studied.•The TC decreases with increasing Sm-content from 358 K for x = 0.0–286 K for x = 0.3.•-ΔSMmax values change from 3.32 J/kgK for x = 0.0–2.60 J/kgK for x = 0.3 at 2 T.•We have measured directly the adiabatic temperature change to be 1.31 K in 3 T.•We have measured the zero-field heat capacity and estimated the ΔTadest to be 1.28 K.
![loading ... loading ...](themes/default/img/ajax-loading.gif)
Shelf entry
Permalink
- URL:
Impact factor
Access to the JCR database is permitted only to users from Slovenia. Your current IP address is not on the list of IP addresses with access permission, and authentication with the relevant AAI accout is required.
Year | Impact factor | Edition | Category | Classification | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Select the library membership card:
If the library membership card is not in the list,
add a new one.
DRS, in which the journal is indexed
Database name | Field | Year |
---|
Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
---|
Source: Personal bibliographies
and: SICRIS
The material is available in full text. If you wish to order the material anyway, click the Continue button.