@article{MTMT:35668057,
	title = {Lattice and spin entropy changes in B2-type magnetocaloric Al-Mn-Ni alloy},
	url = {https://m2.mtmt.hu/api/publication/35668057},
	author = {Huang, Shuo and Dastanpour, Esmat and Strom, Valter and Varga, Lajos Károly and Eriksson, Olle and Jin, Hongyun and Vitos, Levente},
	doi = {10.1088/1361-6463/ad9591},
	journal-iso = {J PHYS D APPL PHYS},
	journal = {JOURNAL OF PHYSICS D-APPLIED PHYSICS},
	volume = {58},
	unique-id = {35668057},
	issn = {0022-3727},
	abstract = {Understanding the electronic, lattice, and magnetic contributions to the magnetocaloric effect in magnetic materials can help to elucidate and optimize their performance. In this work, the structural and magnetocaloric properties of Al-Mn-Ni alloy are experimentally determined and theoretically analyzed based on ab initio calculations. The dominating B2 phase associated with the Mn-rich sublattice is found to be responsible for the observed magnetocaloric properties. The magnetic entropy change, refrigerant capacity, and adiabatic temperature change are evaluated. Through the analysis of the data, we find that for the B2 phase, changing from ferromagnetic to paramagnetic configurations results in a pronounced elastic hardening despite the volume expansion. The decrease in lattice entropy is significant and contributes negatively to the magnetic and electronic entropy changes. Our work emphasizes the critical role of the lattice sector in the magnetocaloric effect, and provides an in-depth understanding of the individual entropy terms in magnetic solid solutions.},
	keywords = {TEMPERATURE; Refrigeration; magnetocaloric effect; Magnetic entropy; B2 structure; lattice entropy},
	year = {2025},
	eissn = {1361-6463}
}

@article{MTMT:35645105,
	title = {Thermal Softening Measurements of Refractory High-Entropy Alloys},
	url = {https://m2.mtmt.hu/api/publication/35645105},
	author = {Temesi, O.K. and Karacs, A. and Nguyen Quang, Chinh and Varga, Lajos Károly},
	doi = {10.3390/ma17235718},
	journal-iso = {MATERIALS},
	journal = {MATERIALS},
	volume = {17},
	unique-id = {35645105},
	year = {2024},
	eissn = {1996-1944},
	orcid-numbers = {Nguyen Quang, Chinh/0000-0002-6610-7308}
}

@article{MTMT:35629928,
	title = {Az anyagtudományi kutatások ipari jövője: az innováció hétköznapi lépései a gyakorlatban a tudomány, a technológia és az ipar határán},
	url = {https://m2.mtmt.hu/api/publication/35629928},
	author = {Temesi, Ottó and Varga, Lajos Károly and Gulyás, Gábor},
	journal-iso = {FIZIKAI SZEMLE},
	journal = {FIZIKAI SZEMLE},
	volume = {74},
	unique-id = {35629928},
	issn = {0015-3257},
	year = {2024},
	pages = {402-412}
}

@article{MTMT:35492351,
	title = {Ductility Index for Refractory High Entropy Alloys},
	url = {https://m2.mtmt.hu/api/publication/35492351},
	author = {Temesi, Ottó K. and Varga, Lajos Károly and Nguyen Quang, Chinh and Vitos, Levente},
	doi = {10.3390/cryst14100838},
	journal-iso = {CRYSTALS},
	journal = {CRYSTALS},
	volume = {14},
	unique-id = {35492351},
	abstract = {The big advantage of refractory high entropy alloys (RHEAs) is their strength at high temperatures, but their big disadvantage is their brittleness at room temperature, which prevents their machining. There is a great need to classify the alloys in terms of brittle-ductile (B-D) properties, with easily obtainable ductility indices (DIs) ready to help design these refractory alloys. Usually, the DIs are checked by representing them as a function of fraction strain, ε. The critical values of DI and ε divide the DI—ε area into four squares. In the case of a successful DI, the points representing the alloys are located in the two diagonal opposite squares, well separating the alloys with (B-D) properties. However, due to the scatter of the data, the B-D separation is not perfect, and it is difficult to establish the critical value of DI. In this paper, we solve this problem by replacing the fracture strain parameter with new DIs that scale with the old DIs. These new DIs are based on the force constant and amplitude of thermal vibration around the Debye temperature. All of them are easily available and can be calculated from tabulated data.},
	year = {2024},
	eissn = {2073-4352},
	orcid-numbers = {Varga, Lajos Károly/0000-0001-8068-0197; Nguyen Quang, Chinh/0000-0002-6610-7308; Vitos, Levente/0000-0003-2832-3293}
}

@article{MTMT:35394968,
	title = {Influence of demagnetizing effects on the magnetization curves of finite-size rectangular slabs},
	url = {https://m2.mtmt.hu/api/publication/35394968},
	author = {Kiss, László Ferenc and Varga, Lajos Károly and Gubicza, Jenő and Péter, László and Bakonyi, Imre},
	doi = {10.1140/epjp/s13360-024-05652-8},
	journal-iso = {EUR PHYS J PLUS},
	journal = {EUROPEAN PHYSICAL JOURNAL PLUS},
	volume = {139},
	unique-id = {35394968},
	issn = {2190-5444},
	abstract = {According to some recent studies, the magnetoresistance curves of ferromagnetic strip-shaped samples can significantly differ depending on whether the in-plane external applied magnetic field H is oriented in parallel to either the long or the short edge of the strip. To address this problem, in the present work magnetization curves M ( H ) were measured for similarly shaped samples with both magnetic field orientations used in the magnetoresistance measurements. It was found that the M ( H ) curves strongly depend on the saturation magnetization and shape of the samples as well as on the magnetic field orientations. For some samples with sufficiently large saturation magnetization, the effective demagnetizing factors could be deduced from the measured M ( H ) curves. By considering the investigated samples as a ferromagnetic slab, and approximating them with a general ellipsoid, the demagnetizing factors were calculated from known formulae and compared to the experimental values. A fairly good matching was observed, although the latter data were systematically slightly larger, certainly due to the not completely homogeneous magnetization within the rectangular slab as opposed to the case of a general ellipsoid. The differences in the M ( H ) curves for the two orientations of the magnetic field could be completely attributed to demagnetizing effects.},
	year = {2024},
	eissn = {2190-5444},
	orcid-numbers = {Gubicza, Jenő/0000-0002-8938-7293; Péter, László/0000-0001-5604-0982; Bakonyi, Imre/0000-0002-5873-8601}
}

@article{MTMT:35059084,
	title = {Prediction of the Cohesion Energy, Shear Modulus and Hardness of Single-Phase Metals and High-Entropy Alloys},
	url = {https://m2.mtmt.hu/api/publication/35059084},
	author = {Temesi, O.K. and Varga, Lajos Károly and Nguyen Quang, Chinh and Vitos, Levente},
	doi = {10.3390/ma17112728},
	journal-iso = {MATERIALS},
	journal = {MATERIALS},
	volume = {17},
	unique-id = {35059084},
	year = {2024},
	eissn = {1996-1944},
	orcid-numbers = {Nguyen Quang, Chinh/0000-0002-6610-7308}
}

@article{MTMT:35020571,
	title = {An assessment of the Al50Cr21-xMn17+xCo12 (x=0, 4, 8) high-entropy alloys for magnetocaloric refrigeration application},
	url = {https://m2.mtmt.hu/api/publication/35020571},
	author = {Dastanpour, E. and Huang, S. and Ström, V. and Varga, Lajos Károly and Vitos, L. and Schönecker, S.},
	doi = {10.1016/j.jallcom.2024.173977},
	journal-iso = {J ALLOY COMPD},
	journal = {JOURNAL OF ALLOYS AND COMPOUNDS},
	volume = {984},
	unique-id = {35020571},
	issn = {0925-8388},
	year = {2024},
	eissn = {1873-4669}
}

@article{MTMT:34562195,
	title = {3D printing parameters optimization for Fe-6.5 wt%Si},
	url = {https://m2.mtmt.hu/api/publication/34562195},
	author = {Kocsis, Bence and Windisch, Márk and Mészáros, István and Varga, Lajos Károly},
	doi = {10.1016/j.jmmm.2024.171829},
	journal-iso = {J MAGN MAGN MATER},
	journal = {JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS},
	volume = {592},
	unique-id = {34562195},
	issn = {0304-8853},
	year = {2024},
	eissn = {1873-4766},
	orcid-numbers = {Kocsis, Bence/0000-0003-4751-5071; Windisch, Márk/0009-0004-3413-2471}
}

@article{MTMT:34453578,
	title = {High-field magnetoresistance measurements on Ni75Co25 and Ni40Co60 alloys at 3 K and 300 K},
	url = {https://m2.mtmt.hu/api/publication/34453578},
	author = {Bakonyi, Imre and Czeschka, F.D. and Isnaini, Vandri Ahmad and Krupp, A.T. and Gubicza, Jenő and Varga, Lajos Károly and Péter, László},
	doi = {10.1016/j.jmmm.2023.171683},
	journal-iso = {J MAGN MAGN MATER},
	journal = {JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS},
	volume = {591},
	unique-id = {34453578},
	issn = {0304-8853},
	abstract = {In the present work, a detailed field dependence of the resistivity of Ni75Co25 and Ni40Co60 bulk alloys was measured at T = 3 K and 300 K up to high magnetic fields. The focus of the study was to determine the anisotropic magnetoresistance (AMR) and to get a quantitative description of the field-induced resistivity change, the latter not yet being available for Ni-Co alloys. The AMR parameters were derived from the resistivity data in the magnetically saturated (monodomain) state by using the Kohler analysis. The values of the AMR ratio were found to be close to the relevant previous data both at low and high temperatures. Due to the measurement precision and careful data evaluation, our AMR data obtained on well-characterized samples can be considered as reference values for the bulk state of the investigated compositions. In addition, also the resistivity anisotropy splitting was determined. The experimentally found field dependence of the resistivity at both T = 3 K and 300 K was found to be at variance with the current theoretical descriptions both for the resistivity increase due to the ordinary magnetoresistance effect being significant at T = 3 K and for the resistivity decrease due to the magnon suppression process at T = 300 K, invoking for a refinement of theory in both cases.},
	keywords = {Anisotropic magnetoresistance; Ni-Co alloys},
	year = {2024},
	eissn = {1873-4766},
	orcid-numbers = {Bakonyi, Imre/0000-0002-5873-8601; Gubicza, Jenő/0000-0002-8938-7293; Péter, László/0000-0001-5604-0982}
}

@article{MTMT:34090189,
	title = {Combinatorial design of partial ordered Al-Cr-Mn-Co medium-entropy alloys for room temperature magnetic refrigeration applications},
	url = {https://m2.mtmt.hu/api/publication/34090189},
	author = {Huang, S. and Dastanpour, E. and Schönecker, S. and Ström, V. and Chai, G. and Kiss, László Ferenc and Varga, Lajos Károly and Jin, H. and Eriksson, O. and Vitos, Levente},
	doi = {10.1063/5.0160477},
	journal-iso = {APPL PHYS LETT},
	journal = {APPLIED PHYSICS LETTERS},
	volume = {123},
	unique-id = {34090189},
	issn = {0003-6951},
	year = {2023},
	eissn = {1077-3118}
}