The Japan Society of Applied Physics (JSAP) serves as an academic interface between science and engineering and an interactive platform for academia and the industry. JSAP is a "conduit" for the transfer of fundamental concepts to the industry for development and technological applications.

JSAP was established as an official academic society in 1946, and since then, it has been one of the leading academic societies in Japan. The society's interests cover a broad variety of scientific and technological fields, and JSAP continues to explore state-of-the-art and interdisciplinary topics.

To this end, the JSAP holds annual conferences; publishes scientific journals; actively sponsors events, symposia, and festivals related to science education; and compiles information related to state-of-the-art technology for the public.

(i) for a metal or insoluble base reacting with an acid to produce a soluble salt filtration is used, e.g. reacting copper(II) oxide with sulphuric acid to make copper(II) sulphate.

(ii) for a soluble base reacting with an acid to produce a soluble salt titration is used, e.g. reacting sodium hydroxide with hydrochloric acid to make sodium chloride.

(iii) for an insoluble base reacting with an acid to produce an insoluble salt a two stage process involving filtration and then precipitation is used, e.g. reacting lead(II) oxide firstly with nitric acid to produce lead(II) nitrate and then reacting the lead(II) nitrate with aqueous iodide ions to produce lead(II) iodide.

Fe 2 O 3 can be obtained in various polymorphs . In the main ones, α and γ, iron adopts octahedral coordination geometry. That is, each Fe center is bound to six oxygen ligands .

α-Fe 2 O 3 has the rhombohedral , corundum (α-Al 2 O 3 ) structure and is the most common form. It occurs naturally as the mineral hematite which is mined as the main ore of iron. It is antiferromagnetic below ~260 K ( Morin transition temperature), and exhibits weak ferromagnetism between 260 K and the Néel temperature , 950 K. [8] It is easy to prepare using both thermal decomposition and precipitation in the liquid phase. Its magnetic properties are dependent on many factors, e.g. pressure, particle size, and magnetic field intensity.

γ-Fe 2 O 3 has a cubic structure. It is metastable and converted from the alpha phase at high temperatures. It occurs naturally as the mineral maghemite. It is ferromagnetic and finds application in recording tapes, [9] although ultrafine particles smaller than 10 nanometers are superparamagnetic . It can be prepared by thermal dehydratation of gamma iron(III) oxide-hydroxide , careful oxidation of iron(II,III) oxide . Another method involves the careful oxidation of Fe 3 O 4 . [9] The ultrafine particles can be prepared by thermal decomposition of iron(III) oxalate .

The Japan Society of Applied Physics (JSAP) serves as an academic interface between science and engineering and an interactive platform for academia and the industry. JSAP is a "conduit" for the transfer of fundamental concepts to the industry for development and technological applications.

JSAP was established as an official academic society in 1946, and since then, it has been one of the leading academic societies in Japan. The society's interests cover a broad variety of scientific and technological fields, and JSAP continues to explore state-of-the-art and interdisciplinary topics.

To this end, the JSAP holds annual conferences; publishes scientific journals; actively sponsors events, symposia, and festivals related to science education; and compiles information related to state-of-the-art technology for the public.

The Japan Society of Applied Physics (JSAP) serves as an academic interface between science and engineering and an interactive platform for academia and the industry. JSAP is a "conduit" for the transfer of fundamental concepts to the industry for development and technological applications.

JSAP was established as an official academic society in 1946, and since then, it has been one of the leading academic societies in Japan. The society's interests cover a broad variety of scientific and technological fields, and JSAP continues to explore state-of-the-art and interdisciplinary topics.

To this end, the JSAP holds annual conferences; publishes scientific journals; actively sponsors events, symposia, and festivals related to science education; and compiles information related to state-of-the-art technology for the public.

(i) for a metal or insoluble base reacting with an acid to produce a soluble salt filtration is used, e.g. reacting copper(II) oxide with sulphuric acid to make copper(II) sulphate.

(ii) for a soluble base reacting with an acid to produce a soluble salt titration is used, e.g. reacting sodium hydroxide with hydrochloric acid to make sodium chloride.

(iii) for an insoluble base reacting with an acid to produce an insoluble salt a two stage process involving filtration and then precipitation is used, e.g. reacting lead(II) oxide firstly with nitric acid to produce lead(II) nitrate and then reacting the lead(II) nitrate with aqueous iodide ions to produce lead(II) iodide.

Preparation of pure iron and iron-carbon alloys : Free.


Preparation of pure iron and iron-carbon alloys - NIST Page

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