Structural and magnetic properties of Co-Ti substituted barium hexaferrite thick films

Samiksha Verma; O. P. Pandey; Andrea Paesano; Puneet Sharma

doi:10.1016/j.jallcom.2016.03.283

Structural and magnetic properties of Co-Ti substituted barium hexaferrite thick films

Samiksha Verma, O. P. Pandey, Andrea Paesano, Puneet Sharma

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

Co-Ti substituted M-type barium hexaferrite BaFe_12-2xCo_xTi_xO₁₉ (0.0 ≤ x ≤ 1.0) thick films were prepared by screen printing method. X-ray diffraction analysis confirmed the formation of single phase BaFe₁₂O₁₉ (BaM). The preferential site occupation of Co²⁺ and Ti⁴⁺ ion for Fe³⁺ ion at five different crystallographic sites (12k, 4f₁, 4f₂, 2a, and 2b) was measured by Mössbauer spectroscopy. The analyses showed Co-Ti ions preferentially occupy 2b and 4f₂ sites which were responsible for drastic decrease in magnetocrystalline anisotropy field (H_a). Magnetization (M) value found to be higher for x = 0.5. The coercivity (H_c) dropped dramatically, recording a reduction of about 95% at x = 1.0, attributed to decreased in H_a. SEM micrographs of Co-Ti substituted films revealed hexagonal grain structure. The magnetic properties of Co-Ti substituted BaM, suggests a possible candidate for microwave applications.

Original language	English
Pages (from-to)	284-289
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	678
DOIs	https://doi.org/10.1016/j.jallcom.2016.03.283
State	Published - 5 Sep 2016
Externally published	Yes

Keywords

Barium hexaferrite
Magnetic properties
Mössbauer spectroscopy
Thick film

Access to Document

10.1016/j.jallcom.2016.03.283

Cite this

@article{2de4f0dddf9d44ceafeeb0710c5f6a27,

title = "Structural and magnetic properties of Co-Ti substituted barium hexaferrite thick films",

abstract = "Co-Ti substituted M-type barium hexaferrite BaFe12-2xCoxTixO19 (0.0 ≤ x ≤ 1.0) thick films were prepared by screen printing method. X-ray diffraction analysis confirmed the formation of single phase BaFe12O19 (BaM). The preferential site occupation of Co2+ and Ti4+ ion for Fe3+ ion at five different crystallographic sites (12k, 4f1, 4f2, 2a, and 2b) was measured by M{\"o}ssbauer spectroscopy. The analyses showed Co-Ti ions preferentially occupy 2b and 4f2 sites which were responsible for drastic decrease in magnetocrystalline anisotropy field (Ha). Magnetization (M) value found to be higher for x = 0.5. The coercivity (Hc) dropped dramatically, recording a reduction of about 95\% at x = 1.0, attributed to decreased in Ha. SEM micrographs of Co-Ti substituted films revealed hexagonal grain structure. The magnetic properties of Co-Ti substituted BaM, suggests a possible candidate for microwave applications.",

keywords = "Barium hexaferrite, Magnetic properties, M{\"o}ssbauer spectroscopy, Thick film",

author = "Samiksha Verma and Pandey, \{O. P.\} and Andrea Paesano and Puneet Sharma",

year = "2016",

month = sep,

day = "5",

doi = "10.1016/j.jallcom.2016.03.283",

language = "English",

volume = "678",

pages = "284--289",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Structural and magnetic properties of Co-Ti substituted barium hexaferrite thick films

AU - Verma, Samiksha

AU - Pandey, O. P.

AU - Paesano, Andrea

AU - Sharma, Puneet

PY - 2016/9/5

Y1 - 2016/9/5

N2 - Co-Ti substituted M-type barium hexaferrite BaFe12-2xCoxTixO19 (0.0 ≤ x ≤ 1.0) thick films were prepared by screen printing method. X-ray diffraction analysis confirmed the formation of single phase BaFe12O19 (BaM). The preferential site occupation of Co2+ and Ti4+ ion for Fe3+ ion at five different crystallographic sites (12k, 4f1, 4f2, 2a, and 2b) was measured by Mössbauer spectroscopy. The analyses showed Co-Ti ions preferentially occupy 2b and 4f2 sites which were responsible for drastic decrease in magnetocrystalline anisotropy field (Ha). Magnetization (M) value found to be higher for x = 0.5. The coercivity (Hc) dropped dramatically, recording a reduction of about 95% at x = 1.0, attributed to decreased in Ha. SEM micrographs of Co-Ti substituted films revealed hexagonal grain structure. The magnetic properties of Co-Ti substituted BaM, suggests a possible candidate for microwave applications.

AB - Co-Ti substituted M-type barium hexaferrite BaFe12-2xCoxTixO19 (0.0 ≤ x ≤ 1.0) thick films were prepared by screen printing method. X-ray diffraction analysis confirmed the formation of single phase BaFe12O19 (BaM). The preferential site occupation of Co2+ and Ti4+ ion for Fe3+ ion at five different crystallographic sites (12k, 4f1, 4f2, 2a, and 2b) was measured by Mössbauer spectroscopy. The analyses showed Co-Ti ions preferentially occupy 2b and 4f2 sites which were responsible for drastic decrease in magnetocrystalline anisotropy field (Ha). Magnetization (M) value found to be higher for x = 0.5. The coercivity (Hc) dropped dramatically, recording a reduction of about 95% at x = 1.0, attributed to decreased in Ha. SEM micrographs of Co-Ti substituted films revealed hexagonal grain structure. The magnetic properties of Co-Ti substituted BaM, suggests a possible candidate for microwave applications.

KW - Barium hexaferrite

KW - Magnetic properties

KW - Mössbauer spectroscopy

KW - Thick film

UR - https://www.scopus.com/pages/publications/84963624389

U2 - 10.1016/j.jallcom.2016.03.283

DO - 10.1016/j.jallcom.2016.03.283

M3 - Article

AN - SCOPUS:84963624389

SN - 0925-8388

VL - 678

SP - 284

EP - 289

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Structural and magnetic properties of Co-Ti substituted barium hexaferrite thick films

Abstract

Keywords

Access to Document

Fingerprint

Cite this