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The Magnetic and Magnetocaloric Properties of the Perovskite La 0.7 Ca 0.3 Mn 1-x Ni x O₃
| Content Provider | Semantic Scholar |
|---|---|
| Author | Hua, Sihao Zhang, Pengyue Yang, H. X. Zhang, Suyin Ge, Hongliang |
| Copyright Year | 2013 |
| Abstract | This paper studies the effects of the Mn-site substitution by nickel on the magnetic properties and the magnetocaloric properties of La 0.7 Ca 0.3 Mn 1-x Ni x O₃ (x = 0, 0.05 and 0.1). The orthorhombic crystal structures of the samples are confirmed by the room temperature X-ray diffraction. The dependence of the Curie temperature (T C ) and the magnetic entropy change (ΔS M ) on the Ni doping content was investigated. The samples with x = 0 had the first order phase transition, while the samples with x = 0.05 and 0.1 had the second order phase transition. As the concentration of Ni increased, the maximum entropy change (|ΔS M | max ) decreased gradually, from 2.78 Jㆍ㎏?¹ㆍK?¹ (x = 0) to 1.02 Jㆍ㎏?¹ㆍK?¹ (x = 0.1), in a magnetic field change of 15 kOe. The measured value of T C was 185 K, 150 K and 145 K for x = 0, 0.05 and 0.1, respectively. The phase transition temperatures became wider as x increased. It indicates that the Mn-site substitution by Ni may be used to tailor the Curie temperature in La 0.7 Ca 0.3 Mn 1-x Ni x O₃. |
| Starting Page | 34 |
| Ending Page | 38 |
| Page Count | 5 |
| File Format | PDF HTM / HTML |
| DOI | 10.4283/JMAG.2013.18.1.034 |
| Volume Number | 18 |
| Alternate Webpage(s) | http://ocean.kisti.re.kr/downfile/volume/tkms/E1MGAB/2013/v18n1/E1MGAB_2013_v18n1_34.pdf |
| Alternate Webpage(s) | https://doi.org/10.4283/JMAG.2013.18.1.034 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
