TY - JOUR
T1 - Absorption characteristics of the electromagnetic wave and magnetic properties of the La0.8Ba0.2Fexmn1/2(1-X)Ti1/2(1-X)O3 (X = 0.1-0.8) Perovskite system
AU - Adi, Wisnu Ari
AU - Manaf, Azwar
AU - Ridwan,
N1 - Publisher Copyright:
© IJTech 2017.
PY - 2017/10
Y1 - 2017/10
N2 - This paper reports on the magnetic properties and electromagnetic characterization of La0.8Ba0.2Fexmn1/2(1-X)Ti1/2(1-X)O3 (X = 0.1-0.8). The La0.8Ba0.2Fexmn1/2(1-X)Ti1/2(1-X)O3 (X = 0.1-0.8) materials were prepared using a mechanical alloying method. All the materials were made of analytical grade precursors of BaCO3, Fe2O3, MnCO3, TiO2, and La2O3, which were blended and mechanically milled in a planetary ball mill for 10h. The milled powders were compacted and subsequently sintered at 1000°C for 5h. All the sintered samples showed a fully crystalline structure, as confirmed using an X-ray diffractometer. It is shown that all samples consisted of LaMnO3 based as the major phase with the highest mass fraction up to 99% found in samples with x < 0.3. The mass fraction of main phase in doped samples decreased in samples with x > 0.3. The hysteresis loop derived from magnetic properties measurement confirmed the present of hard magnetic BaFe12O19 phase in all La0.8Ba0.2Fexmn1/2(1-X)Ti1/2(1-X)O3 (X = 0.1-0.8) samples. The results of the electromagnetic wave absorption indicated that there were three absorption peaks of ~9 dB, ~8 dB, and ~23.5 dB, respectively, at respective frequencies of 9.9 GHz, 12.0 GHz, and 14.1 GHz. After calculations of reflection loss formula, the electromagnetic wave absorption was found to reach 95% at the highest peak frequency of 14.1 GHz with a sample thickness of around 1.5 mm. Thus, this study successfully synthesized a single phase of La0.8Ba0.2Fexmn1/2(1-X)Ti1/2(1-X)O3 (X = 0.1-0.8) for the electromagnetic waves absorber material application.
AB - This paper reports on the magnetic properties and electromagnetic characterization of La0.8Ba0.2Fexmn1/2(1-X)Ti1/2(1-X)O3 (X = 0.1-0.8). The La0.8Ba0.2Fexmn1/2(1-X)Ti1/2(1-X)O3 (X = 0.1-0.8) materials were prepared using a mechanical alloying method. All the materials were made of analytical grade precursors of BaCO3, Fe2O3, MnCO3, TiO2, and La2O3, which were blended and mechanically milled in a planetary ball mill for 10h. The milled powders were compacted and subsequently sintered at 1000°C for 5h. All the sintered samples showed a fully crystalline structure, as confirmed using an X-ray diffractometer. It is shown that all samples consisted of LaMnO3 based as the major phase with the highest mass fraction up to 99% found in samples with x < 0.3. The mass fraction of main phase in doped samples decreased in samples with x > 0.3. The hysteresis loop derived from magnetic properties measurement confirmed the present of hard magnetic BaFe12O19 phase in all La0.8Ba0.2Fexmn1/2(1-X)Ti1/2(1-X)O3 (X = 0.1-0.8) samples. The results of the electromagnetic wave absorption indicated that there were three absorption peaks of ~9 dB, ~8 dB, and ~23.5 dB, respectively, at respective frequencies of 9.9 GHz, 12.0 GHz, and 14.1 GHz. After calculations of reflection loss formula, the electromagnetic wave absorption was found to reach 95% at the highest peak frequency of 14.1 GHz with a sample thickness of around 1.5 mm. Thus, this study successfully synthesized a single phase of La0.8Ba0.2Fexmn1/2(1-X)Ti1/2(1-X)O3 (X = 0.1-0.8) for the electromagnetic waves absorber material application.
KW - Absorber
KW - Electromagnetic wave
KW - Lanthanum manganite
KW - Magnetic
KW - Perovskite
KW - Structural
KW - Substitution
UR - http://www.scopus.com/inward/record.url?scp=85034025203&partnerID=8YFLogxK
U2 - 10.14716/ijtech.v8i5.871
DO - 10.14716/ijtech.v8i5.871
M3 - Article
AN - SCOPUS:85034025203
SN - 2087-2100
VL - 8
SP - 887
EP - 897
JO - International Journal of Technology
JF - International Journal of Technology
IS - 5
ER -