## Abstract

The Nd_{2}Pt_{2}In compound was investigated by means of electrical resistivity ρ(T), heat capacity C_{p}(T), magnetic susceptibility χ(T), magnetization M(μ_{0}H) and magnetocaloric effect (MCE) measurements. The material orders ferromagnetically at T_{C} = 16 K with a second - order phase transition. In the ordered state, ρ(T) can be represented in terms of ferromagnetic (FM) spin - wave dispersion with an energy gap Δ_{R} = 13(1) K in zero field. In concert, the C_{p}(T) data in this region can be well described by the same model getting Δ_{C} = 8(1) K in zero field. Above T_{C}, the ρ(T) variation is characteristic of electron - phonon interaction in the presence of s−d scattering and crystalline-electric field (CEF). The 4f - electron specific heat shows a Schottky - type anomaly around 60 K associated with CEF. On the other hand, C_{p}(T) data of the non-magnetic homologue La_{2}Pt_{2}In can be described by the Debye - Einstein model, giving a Debye and Einstein temperature values of 190.3(5) K and 69.8(7) K respectively. At high temperatures, the χ(T) data follows the Curie - Weiss relation with an effective magnetic moment μ_{eff} = 3.61(2) μ_{B} and a Weiss temperature θ_{p} = 17(1) K. The magnitude of MCE was estimated from the isothermal magnetization data to be 6.25 J/(kg.K), 5.01 J/(kg.K), 3.18 J/(kg.K) and 0.47 J/(kg.K) for a field change of 7 T, 5 T, 3 T and 1 T, respectively. The characteristic behaviour of the isothermal magnetic entropy change points to a second - order character of the FM phase transition.

Original language | English |
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Pages (from-to) | 41-45 |

Number of pages | 5 |

Journal | Journal of Alloys and Compounds |

Volume | 753 |

DOIs | |

Publication status | Published - 15 Jul 2018 |

## Keywords

- Electrical resistivity
- Ferromagnetism
- Heat capacity
- Magnetic susceptibility
- Magnetocaloric effect
- Spin-wave

## ASJC Scopus subject areas

- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry

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