Microwave absorption in Ni–Zn ferrites through the Curie transition

Montiel, H.; Alvarez, G.; Gutiérrez, M.; Zamorano, R.; Valenzuela, R.

doi:10.1016/j.jallcom.2003.09.074

Cited by 74 publications

(56 citation statements)

References 5 publications

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“…Both EPR and FMR have been used to investigate a wide variety of materials such as ferrites (Montiel et al 2004, Wu et al 2006 and amorphous alloys (Valenzuela et al 2005b, Montiel et al 2006. In addition to these methods, nonresonant microwave absorption, or low field microwave absorption (LFMA) has been observed in many materials, such as amorphous metallic thin films (Rivoire & Suran 1995), amorphous ribbons (Medina et al 1999), glass coated amorphous microwires (Chiriac et al 2000), ferrites (Montiel et al 2004), multilayer thin films . LFMA is strongly associated with magnetic order since in all cases it is present only below the transition temperature between the paramagnetic-ferrimagnetic (or para-ferromagnetic) phases.…”

Section: Microwave Absorptionmentioning

confidence: 99%

The Temperature Behavior of Resonant and Non-resonant Microwave Absorption in Ni-Zn Ferrites

Valenzuela¹

2011

Electromagnetic Waves

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Section: Microwave Absorptionmentioning

confidence: 99%

The Temperature Behavior of Resonant and Non-resonant Microwave Absorption in Ni-Zn Ferrites

Valenzuela¹

2011

Electromagnetic Waves

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“…A relatively new phenomenon called low-field microwave absorption (LFMA) -Microwave power absorption (MPA) centered at zero magnetic field (B = 0) has been observed in ferromagnetic materials and various other materials such as high temperature superconductors, ferrites, manganites, semiconductors, doped silicate glasses and in soft magnetic materials [6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Low-field microwave absorption in pulse laser deposited FeSi thin film

Gavi¹,

Ngom²,

Beye³

et al. 2012

Journal of Magnetism and Magnetic Materials

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Low field microwave absorption (LFMA) measurements at 9.4 GHz (X-band), were carried out on pulse laser deposited (PLD) polycrystalline B20 cubic structure FeSi thin film grown on Si(111) substrate. The LFMA properties of the films were investigated as a function of DC field, temperature, microwave power and the orientation of DC field with respect to the film surface. The LFMA signal is very strong when the DC field is parallel to the film surface and vanishes at higher angles. The LFMA signal strength increases as the microwave power is increased. The LFMA signal disappears around 340 K, which can be attributed to the disappearance of ferromagnetic state well above room temperature in these films. We believe that domain structure evolution in low fields, which in turn modifies the low field permeability as well as the anisotropy could be the origin of the LFMA observed in these films. The observation of LFMA opens the possibility of the FeSi films to be used as low magnetic field sensors in the microwave and rf frequency regions.

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“…Both EPR and FMR have been used to investigate a wide variety of materials such as ferrites (Montiel et al 2004 and amorphous alloys (Valenzuela et al 2005b, Montiel et al 2006. In addition to these methods, nonresonant microwave absorption, or low field microwave absorption (LFMA) has been observed in many materials, such as amorphous metallic thin films (Rivoire & Suran 1995), amorphous ribbons (Medina et al 1999), glass coated amorphous microwires (Chiriac et al 2000), ferrites (Montiel et al 2004), multilayer thin films . LFMA is strongly associated with magnetic order since in all cases it is present only below the transition temperature between the paramagnetic-ferrimagnetic (or para-ferromagnetic) phases.…”

Section: Microwave Absorptionmentioning

confidence: 99%