scholarly journals Growth and Characterisation of Antiferromagnetic Ni2MnAl Heusler Alloy Films

2021 ◽  
Vol 7 (9) ◽  
pp. 127
Author(s):  
Teodor Huminiuc ◽  
Oliver Whear ◽  
Andrew J. Vick ◽  
David C. Lloyd ◽  
Gonzalo Vallejo-Fernandez ◽  
...  
Keyword(s):  
Thin Film ◽  
Magnetic Properties ◽  
Heusler Alloy ◽  
Room Temperature ◽  
High Resistivity ◽  
Co Doping ◽  
Device Applications ◽  
Structural And Magnetic Properties ◽  
Device Operation ◽  
Film Form

Recent rapid advancement in antiferromagnetic spintronics paves a new path for efficient computing with THz operation. To date, major studies have been performed with conventional metallic, e.g., Ir-Mn and Pt-Mn, and semiconducting, e.g., CuMnAs, antiferromagnets, which may suffer from their elemental criticality and high resistivity. In order to resolve these obstacles, new antiferromagnetic films are under intense development for device operation above room temperature. Here, we report the structural and magnetic properties of an antiferromagnetic Ni2MnAl Heusler alloy with and without Fe and Co doping in thin film form, which has significant potential for device applications.

Ferromagnetic Property of Co and Fe-Implanted ZnO Thin Film at Room Temperature

2006 ◽  
Vol 52 ◽  
pp. 42-47 ◽  
Author(s):  
W.K. Choi ◽  
B. Angadi ◽  
H.C. Park ◽  
J.H. Lee ◽  
Jong Han Song ◽  
...  
Keyword(s):  
Thin Film ◽  
Magnetic Properties ◽  
Room Temperature ◽  
Ion Irradiation ◽  
Zno Thin Films ◽  
High Resistivity ◽  
Zno Thin Film ◽  
Ferromagnetic Property ◽  
Before And After ◽  
Xrd Patterns

The results Co and Fe implanted ZnO thin films were studied before and after 200 MeV Ag ion irradiation. The as-implanted films shows the presence of nano sized Co and Fe clusters as seen through XRD patterns and exhibited high resistivity compared to un-implanted films. After Ag ion irradiation the Co and Fe clusters get dissolved in ZnO lattice and the films resistivity reduced to half of the as implanted values. The magnetic properties of Ag irradiated films were confirmed through magnetization hysteresis and Co implanted films exhibit higher magnetization compared to Fe implanted films.

Structural and magnetic properties of nitrided finemet-type ribbons

2000 ◽  
Vol 77 (9) ◽  
pp. 731-736
Author(s):  
H Atmani ◽  
S Grognet ◽  
J Teillet ◽  
K Zellama ◽  
R Zuberek
Keyword(s):  
Magnetic Properties ◽  
Curie Temperature ◽  
Crystalline Phase ◽  
Room Temperature ◽  
Structural Parameters ◽  
Thermochemical Treatment ◽  
Specific Magnetization ◽  
Nano Structure ◽  
Magnetostriction Constant ◽  
Structural And Magnetic Properties

Nitriding thermochemical treatment under suitable parameters is used to nano-crystallize Fe73.5Cu1Nb3Si13.5B9 ribbon. This new kind of treatment leads to finer nano-structure and modifies the structural parameters of the α-Fe(Si) phase, obtained during the treatment. The magnetic properties are also improved; specific magnetization at room temperature and Curie temperature of the crystalline phase increase, and the magnetostriction constant becomes smaller. The nitrogenation seems to offer a new way to obtain nanostructured ribbons. PACS No.: 75.70

scholarly journals Structural and magnetic properties of cubic and tetragonal Heusler alloy bilayers

2016 ◽  
Vol 96 ◽  
pp. 490-498 ◽  
Author(s):  
R. Ranjbar ◽  
K. Suzuki ◽  
A. Sugihara ◽  
Q.L. Ma ◽  
X.M. Zhang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Heusler Alloy ◽  
Structural And Magnetic Properties

Influence of Co-Doping on Magnetic Properties and Magnetocaloric Effect of Fe–Co–Zr–Cu–B Melt-Spun Ribbons

2021 ◽  
Vol 21 (4) ◽  
pp. 2552-2557
Author(s):  
Nguyen Hai Yen ◽  
Nguyen Hoang Ha ◽  
Pham Thi Thanh ◽  
Nguyen Huy Ngoc ◽  
Tran Dang Thanh ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetocaloric Effect ◽  
Melt Spinning ◽  
Room Temperature ◽  
Tangential Velocity ◽  
Magnetic Behavior ◽  
Entropy Change ◽  
Co Doping ◽  
Melt Spun ◽  
Melt Spun Ribbons

In this work, we investigated magnetic properties and magnetocaloric effect in Fe90−xCoxZr7Cu1B2 (x = 0, 1, 2, 3 and 4) melt-spun ribbons. The ribbons were prepared by using a melt-spinning method with a tangential velocity of a copper wheel of 40 m·s-1. The obtained ribbons are almost amorphous. The alloys exhibit typical soft magnetic behavior with low coercivity at room temperature. A minor replacement of Fe by Co gives an increment in Curie temperature (TC) of the alloys to higher temperatures. The TC of the alloys increases from 242 to 342 K with an increase of x from 0 to 4. Maximum magnetic entropy change, ΔSm max, of the alloys, was found to be larger than 0.7 J·kg-1·K-1 in a magnetic field change ΔH of 12 kOe for all the concentrations of Co. High refrigerant capacitys (RC >100 J ·kg-1 with ΔH = 12 kOe) at room temperature region have been obtained for the alloys. The large magnetocaloric effect near room temperature suggests that the alloys can be considered as magnetic refrigerants in the range of 250–350 K.

Structural and Magnetic Properties of Tetragonal Mn1.19Fe0.81As Thin Film Grown on Si(001)

2008 ◽  
Vol 52 (11) ◽  
pp. 96 ◽  
Author(s):  
Younghun Hwang ◽  
Jeongyong Choi ◽  
Suk-Hee Han ◽  
Sungyoul Choi ◽  
Yong-Hamb Kim ◽  
...  
Keyword(s):  
Thin Film ◽  
Magnetic Properties ◽  
Structural And Magnetic Properties
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